Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_FUNCTION - A macro that reports the current function being compiled.
SYNOPSIS
#include <SDL3/SDL_assert.h>
#define SDL_FUNCTION __FUNCTION__
DESCRIPTION
If SDL can't figure how the compiler reports this, it will use "???".
AVAILABILITY
This macro is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_FUNCTION(3)