###### (This is the documentation for SDL3, which is the current stable version. [SDL2](https://wiki.libsdl.org/SDL2/) was the previous version!) # SDL_GetTicksNS Get the number of nanoseconds since SDL library initialization. ## Header File Defined in [](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_timer.h) ## Syntax ```c Uint64 SDL_GetTicksNS(void); ``` ## Return Value ([Uint64](Uint64)) Returns an unsigned 64-bit value representing the number of nanoseconds since the SDL library initialized. ## Thread Safety It is safe to call this function from any thread. ## Version This function is available since SDL 3.1.3. ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryTimer](CategoryTimer)