#ifndef _STDDEF_H #define _STDDEF_H #if __cplusplus >= 201103L && !defined(__EMSCRIPTEN__) #define NULL nullptr #elif defined(__cplusplus) #define NULL 0L #else #define NULL ((void*)0) #endif #define __NEED_ptrdiff_t #define __NEED_size_t #define __NEED_wchar_t #if __STDC_VERSION__ >= 201112L || __cplusplus >= 201103L #define __NEED_max_align_t #endif #include #if __GNUC__ > 3 #define offsetof(type, member) __builtin_offsetof(type, member) #else #define offsetof(type, member) ((size_t)( (char *)&(((type *)0)->member) - (char *)0 )) #endif #endif