SDL_NS_PER_SECOND - Number of nanoseconds in a second.

       This macro is available since SDL 3.2.0.

Simple Directmedia Layer                           SDL 3.2.20                               SDL_NS_PER_SECOND(3)

       This is always 1000000000.

       SDL_NS_PER_SECOND - Number of nanoseconds in a second.

#include<SDL3/SDL_timer.h>#defineSDL_NS_PER_SECOND1000000000LL