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

NAME
SDL_HAPTIC_CUSTOM - Custom effect is supported.
SYNOPSIS
#include <SDL3/SDL_haptic.h>
#define SDL_HAPTIC_CUSTOM (1u<<15)
DESCRIPTION
User defined custom haptic effect.
AVAILABILITY
This macro is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_HAPTIC_CUSTOM(3)