Man page - sdl_getdayofyear(3)

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Manual

SDL_GetDayOfYear(3) SDL3 FUNCTIONS SDL_GetDayOfYear(3)

SDL_GetDayOfYear - Get the day of year for a calendar date.

Defined in SDL3/SDL_time.h

#include "SDL3/SDL.h"
int SDL_GetDayOfYear(int year, int month, int day);

the year component of the date.
the month component of the date.
the day component of the date.

Returns the day of year [0-365] if the date is valid or -1 on failure; call SDL_GetError () for more information.

This function is available since SDL 3.2.0.

SDL 3.2.10 Simple Directmedia Layer