Set an atomic variable to a new value if it is currently an old value.
int oldval, int newval);SDL_bool SDL_AtomicCAS(SDL_AtomicInt *a,
|a||a pointer to an SDL_AtomicInt variable to be modified|
|oldval||the old value|
|newval||the new value|
Returns SDL_TRUE if the atomic variable was set, SDL_FALSE otherwise.
Note: If you don't know what this function is for, you shouldn't use it!
This function is available since SDL 3.0.0.