1#ifndef _STDDEF_H
 2#define _STDDEF_H
 3
 4#if __cplusplus >= 201103L
 5#define NULL nullptr
 6#elif defined(__cplusplus)
 7#define NULL 0L
 8#else
 9#define NULL ((void*)0)
10#endif
11
12#define __NEED_ptrdiff_t
13#define __NEED_size_t
14#define __NEED_wchar_t
15#if __STDC_VERSION__ >= 201112L || __cplusplus >= 201103L
16#define __NEED_max_align_t
17#endif
18
19#include <bits/alltypes.h>
20
21#if __GNUC__ > 3
22#define offsetof(type, member) __builtin_offsetof(type, member)
23#else
24#define offsetof(type, member) ((size_t)( (char *)&(((type *)0)->member) - (char *)0 ))
25#endif
26
27#endif