SDL_SECONDS_TO_NS - Convert seconds to nanoseconds.

       This macro is available since SDL 3.2.0.

Simple Directmedia Layer                           SDL 3.2.20                               SDL_SECONDS_TO_NS(3)

       This only converts whole numbers, not fractional seconds.

S      the number of seconds to convert.

       SDL_SECONDS_TO_NS - Convert seconds to nanoseconds.

       Returns S, expressed in nanoseconds.

#include<SDL3/SDL_timer.h>#defineSDL_SECONDS_TO_NS(S)(((Uint64)(S))*SDL_NS_PER_SECOND)

       It is safe to call this macro from any thread.