Function SDL_GetPerformanceFrequency 

pub unsafe extern "C" fn SDL_GetPerformanceFrequency() -> Uint64

Get the count per second of the high resolution counter.

Returns: a platform-specific count per second.

Thread Safety: It is safe to call this function from any thread.

Available Since: This function is available since SDL 3.2.0.

See Also: SDL_GetPerformanceCounter