A callback used with SDL sorting and binary search functions.
Defined in <SDL3/SDL_stdinc.h>
typedef int (SDLCALL *SDL_CompareCallback_r)(void *userdata, const void *a, const void *b);| 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. |
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.
This callback is available since SDL 3.2.0.