HandmadeMath VS cglm

HandmadeMath does that for example, so you can take a look at how they've done it: https://github.com/HandmadeMath/Handmade-Math

It's too bad you are using C. If you were using C++, you could use teh fantastic GLM library, which implements the vector math stuff from GLSL as CPU/C++ code. you might want to have a look at CLGM: https://github.com/recp/cglm

But you can use cglm, it will do looooong way.

There's cglm, but I don't know how good it is. Really though for hobby OpenGL stuff, it's going to be 3x3, 4x4, 1x4 matrices, so rolling one's own stuff is not that terrible, if it proves to be a bottleneck (probably won't), you can drop in some fancy SIMD bullshit later.

There is a cglm: repo

GLM and CGLM should probably be mentioned as well since you'll probably want a good linear algebra library if you are going with just a rendering library instead of a full game engine.

Another nice library is https://github.com/recp/cglm. It uses manually vectorized code (SSE2), so the vectors must be aligned. It would be interesting to know what the compiler can do with auto vectorization, in compersion.