###### (This is the documentation for SDL3, which is under heavy development and the API is changing! [SDL2](https://wiki.libsdl.org/SDL2/) is the current stable version!) # SDL_HasRDTSC Determine whether the CPU has the RDTSC instruction. ## Syntax ```c SDL_bool SDL_HasRDTSC(void); ``` ## Return Value Returns [SDL_TRUE](SDL_TRUE) if the CPU has the RDTSC instruction or [SDL_FALSE](SDL_FALSE) if not. ## Remarks This always returns false on CPUs that aren't using Intel instruction sets. ## Version This function is available since SDL 3.0.0. ## Related Functions * [SDL_HasAltiVec](SDL_HasAltiVec) * [SDL_HasAVX](SDL_HasAVX) * [SDL_HasAVX2](SDL_HasAVX2) * [SDL_HasMMX](SDL_HasMMX) * [SDL_HasSSE](SDL_HasSSE) * [SDL_HasSSE2](SDL_HasSSE2) * [SDL_HasSSE3](SDL_HasSSE3) * [SDL_HasSSE41](SDL_HasSSE41) * [SDL_HasSSE42](SDL_HasSSE42) ---- [CategoryAPI](CategoryAPI), [CategoryCPU](CategoryCPU)