#ifndef __STDC_VERSION_STDALIGN_H__
#define __STDC_VERSION_STDALIGN_H__ 202311L

#ifndef __cplusplus

/* this whole header only works in C11 or with compiler extensions */
#if __STDC_VERSION__ < 201112L && defined( __GNUC__)
# define _Alignas(t) __attribute__((__aligned__(t)))
# define _Alignof(t) __alignof__(t)
#endif

#if __STDC_VERSION__ < 202311L
#define alignas _Alignas
#define alignof _Alignof
#endif

/* Starting with C23 this header has no contents because these are keywords. */
#if __STDC_VERSION__ < 202311L
#define __alignas_is_defined 1
#define __alignof_is_defined 1
#endif

#endif

#endif