Man page - sdl_windowpos_isundefined(3)
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Manual
SDL_WINDOWPOS_ISUNDEFINED
NAMEHEADER FILE
SYNOPSIS
AVAILABILITY
NAME
SDL_WINDOWPOS_ISUNDEFINED - A macro to test if the window position is marked as "undefined."
HEADER FILE
Defined in SDL3/SDL_video.h
SYNOPSIS
#include "SDL3/SDL.h"
#define SDL_WINDOWPOS_ISUNDEFINED(X) (((X)&0xFFFF0000) == SDL_WINDOWPOS_UNDEFINED_MASK)
AVAILABILITY
This macro is available since SDL 3.2.0.