Man page - sdl_line(3)

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Manual

SDL_LINE(3) SDL3 FUNCTIONS SDL_LINE(3)

SDL_LINE - A macro that reports the current line number of the file being compiled.

Defined in SDL3/SDL_assert.h

#include "SDL3/SDL.h"
#define SDL_LINE    __LINE__

This macro is available since SDL 3.2.0.

SDL 3.2.10 Simple Directmedia Layer