remove deprecation warnings

cuda/fps.cpp

 #include <torch/extension.h>
 
-#define CHECK_CUDA(x) AT_ASSERTM(x.type().is_cuda(), #x " must be CUDA tensor")
+#define CHECK_CUDA(x)                                                          \
+  AT_ASSERTM(x.device().is_cuda(), #x " must be CUDA tensor")
 #define IS_CONTIGUOUS(x) AT_ASSERTM(x.is_contiguous(), #x " is not contiguous");
 
 at::Tensor fps_cuda(at::Tensor x, at::Tensor batch, float ratio, bool random);

cuda/graclus.cpp

 #include <torch/extension.h>
 
-#define CHECK_CUDA(x) AT_ASSERTM(x.type().is_cuda(), #x " must be CUDA tensor")
+#define CHECK_CUDA(x)                                                          \
+  AT_ASSERTM(x.device().is_cuda(), #x " must be CUDA tensor")
 
 at::Tensor graclus_cuda(at::Tensor row, at::Tensor col, int64_t num_nodes);
 

cuda/grid.cpp

 #include <torch/extension.h>
 
-#define CHECK_CUDA(x) AT_ASSERTM(x.type().is_cuda(), #x " must be CUDA tensor")
+#define CHECK_CUDA(x)                                                          \
+  AT_ASSERTM(x.device().is_cuda(), #x " must be CUDA tensor")
 
 at::Tensor grid_cuda(at::Tensor pos, at::Tensor size, at::Tensor start,
                      at::Tensor end);

cuda/knn.cpp

 #include <torch/extension.h>
 
-#define CHECK_CUDA(x) AT_ASSERTM(x.type().is_cuda(), #x " must be CUDA tensor")
+#define CHECK_CUDA(x)                                                          \
+  AT_ASSERTM(x.device().is_cuda(), #x " must be CUDA tensor")
 #define IS_CONTIGUOUS(x) AT_ASSERTM(x.is_contiguous(), #x " is not contiguous");
 
 at::Tensor knn_cuda(at::Tensor x, at::Tensor y, size_t k, at::Tensor batch_x,

cuda/nearest.cpp

 #include <torch/extension.h>
 
-#define CHECK_CUDA(x) AT_ASSERTM(x.type().is_cuda(), #x " must be CUDA tensor")
+#define CHECK_CUDA(x)                                                          \
+  AT_ASSERTM(x.device().is_cuda(), #x " must be CUDA tensor")
 #define IS_CONTIGUOUS(x) AT_ASSERTM(x.is_contiguous(), #x " is not contiguous");
 
 at::Tensor nearest_cuda(at::Tensor x, at::Tensor y, at::Tensor batch_x,

cuda/radius.cpp

 #include <torch/extension.h>
 
-#define CHECK_CUDA(x) AT_ASSERTM(x.type().is_cuda(), #x " must be CUDA tensor")
+#define CHECK_CUDA(x)                                                          \
+  AT_ASSERTM(x.device().is_cuda(), #x " must be CUDA tensor")
 #define IS_CONTIGUOUS(x) AT_ASSERTM(x.is_contiguous(), #x " is not contiguous");
 
 at::Tensor radius_cuda(at::Tensor x, at::Tensor y, float radius,

cuda/rw.cpp

 #include <torch/extension.h>
 
-#define CHECK_CUDA(x) AT_ASSERTM(x.type().is_cuda(), #x " must be CUDA tensor")
+#define CHECK_CUDA(x)                                                          \
+  AT_ASSERTM(x.device().is_cuda(), #x " must be CUDA tensor")
 #define IS_CONTIGUOUS(x) AT_ASSERTM(x.is_contiguous(), #x " is not contiguous");
 
 at::Tensor rw_cuda(at::Tensor row, at::Tensor col, at::Tensor start,