SDL Wiki
(This is the documentation for SDL3, which is under heavy development and the API is changing! SDL2 is the current stable version!)


Set a pointer to a new value if it is currently an old value.

Header File

Defined in <SDL3/SDL_atomic.h>


SDL_bool SDL_AtomicCompareAndSwapPointer(void **a, void *oldval, void *newval);

Function Parameters

void ** a a pointer to a pointer.
void * oldval the old pointer value.
void * newval the new pointer value.

Return Value

(SDL_bool) Returns SDL_TRUE if the pointer was set, SDL_FALSE otherwise.


Note: If you don't know what this function is for, you shouldn't use it!

Thread Safety

It is safe to call this function from any thread.


This function is available since SDL 3.0.0.

See Also

CategoryAPI, CategoryAPIFunction, CategoryAtomic

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