Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_MMX_INTRINSICS - Defined if (and only if) the compiler supports Intel MMX intrinsics.
SYNOPSIS
#include <SDL3/SDL_intrin.h>
#define SDL_MMX_INTRINSICS 1
DESCRIPTION
If this macro is defined, SDL will have already included <mmintrin.h>
AVAILABILITY
This macro is available since SDL 3.2.0.
SEE ALSO
SDL_SSE_INTRINSICS(3)
Simple Directmedia Layer SDL 3.2.20 SDL_MMX_INTRINSICS(3)