= SDL_GetTicks64 = Get the number of milliseconds since SDL library initialization. == Syntax == Uint64 SDL_GetTicks64(void); == Return Value == Returns an unsigned 64-bit value representing the number of milliseconds since the SDL library initialized. == Remarks == Note that you should not use the [[SDL_TICKS_PASSED]] macro with values returned by this function, as that macro does clever math to compensate for the 32-bit overflow every ~49 days that [[SDL_GetTicks]]() suffers from. 64-bit values from this function can be safely compared directly. For example, if you want to wait 100 ms, you could do this: const Uint64 timeout = SDL_GetTicks64() + 100; while (SDL_GetTicks64() < timeout) { // ... do work until timeout has elapsed } == Version == This function is available since SDL 2.0.18. ---- [[CategoryAPI]], [[CategoryTimer]]