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

NAME
SDL_PRIX64 - A printf-formatting string for a Uint64 value as upper-case hexadecimal.
SYNOPSIS
#include <SDL3/SDL_stdinc.h>
#define SDL_PRIX64 "llX"
DESCRIPTION
Use it like this:
SDL_Log("There are %" SDL_PRIX64 " bottles of beer on the wall.", bottles);
AVAILABILITY
This macro is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_PRIX64(3)