DirectXMath in C

This is an adaptation of the official DirectXMath C++ library using C.

This was done for educational purposes, in order to learn better about SIMD and DirectX.

How to build (MSVC)

To run the tests, build with the following CMake command:

cmake -B build-test-vectorcall -S . -DXM_USE_TEST=1 -DUSE_VECTORCALL=1 -DCMAKE_BUILD_TYPE=Debug

To not use __vectorcall, just change the -DUSE_VECTORCALL=0

To do the same disabling intrinsics:

cmake -B build-test-nointrin -S . -DXM_NO_INTRINSICS=ON -DXM_USE_TEST=ON -DCMAKE_BUILD_TYPE=Debug

To run the tests, run the following:

cmake --build build-test-vectorcall
ctest --test-dir build-test-vectorcall -C Debug -V

How to build (GCC)

Just add -G "MinGW Makefiles":

cmake -B build-test-gcc -S . -DXM_USE_TEST=1 -DUSE_VECTORCALL=1 -DCMAKE_BUILD_TYPE=Debug -G "MinGW Makefiles"
cmake --build build-test-gcc
ctest --test-dir build-test-gcc -C Debug -V

Installing (to use in other projects)

MSVC:

cmake -S . -B build-install
cmake --build build-install --target INSTALL --config Release

GCC:

cmake -S . -B build-install-gcc -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Release
cmake --build build-install-gcc --target install

This will generate the folder xmathc, probably in C:/. This will allow us to use xmathc in other projects.