SDL_CompareCallback_r - A callback used with SDL sorting and binary search functions.

       This callback is available since SDL 3.2.0.

userdata
              the userdata pointer passed to the sort function.

       a      a pointer to the first element being compared.

       b      a pointer to the second element being compared.

       Defined in SDL3/SDL_stdinc.h

       SDL_CompareCallback_r - A callback used with SDL sorting and binary search functions.

       Returns  -1  if  a should be sorted before b , 1 if b should be sorted before a , 0 if they are equal. If
       two elements are equal, their order in the sorted array is undefined.

•(3), SDL_qsort_r(3), •(3), SDL_bsearch_r(3)

Simple Directmedia Layer                           SDL 3.2.10                       SDL_CompareCallback_r(3type)

#include"SDL3/SDL.h"typedefint(SDLCALL*SDL_CompareCallback_r)(void*userdata,constvoid*a,constvoid*b);