* fix pad calc

* simplify ceil calc and remove extra vars

* workatound for nasnet

* formatting

* add split and tests

* formatting

* fix cppcheck and clang-tidy

* fix clang tidy

* refactor to use vector of instruction_ref, add UNDEBUG to clang tidy

* formatting

* fix comment code

* fix comments and tidy

* formatting

* fix syntax error

* fix tidy

* remove namespace comment