#define HMM_PREFIX(name) WOW_##name #define HANDMADE_MATH_IMPLEMENTATION #define HANDMADE_MATH_NO_INLINE #include "../HandmadeMath.h" int main() { hmm_vec4 a = WOW_Vec4(1, 2, 3, 4); hmm_vec4 b = WOW_Vec4(5, 6, 7, 8); WOW_Add(a, b); }