stddef.h
来自「msp 的开发实例程序」· C头文件 代码 · 共 40 行
H
40 行
/* - STDDEF.H -
The ANSI 'common' definitions.
$Revision: 38615 $
Copyright 1986 - 1999 IAR Systems. All rights reserved.
*/
#ifndef _STDDEF_INCLUDED
#define _STDDEF_INCLUDED
#ifndef _SYSTEM_BUILD
#pragma system_include
#endif
#include "sysmac.h"
#ifndef NULL
#define NULL ((void *) 0)
#endif
#ifndef offsetof
#if __IAR_SYSTEMS_ICC__ >= 2
#define offsetof(type,member) (__INTADDR__((&((type *)0)->member)))
#else
#define offsetof(type,member) ((size_t)(&((type *)0)->member))
#endif
#endif
#ifndef wchar_t
#if __IAR_SYSTEMS_ICC__ >= 2 && defined(__WCHAR_T_TYPE__)
#define wchar_t __WCHAR_T_TYPE__
#else
#define wchar_t char
#endif
#endif
#endif
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