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