stddef.h

来自「Motorola MCU HC08下的uCOSII移植源代码」· C头文件 代码 · 共 70 行

/*****************************************************
   stddef.h - ANSI-C library: standard definitions
 ----------------------------------------------------
   Copyright (c) HIWARE AG, Basel, Switzerland
               All rights reserved
                  Do not modify!
 *****************************************************/

#ifndef _H_STDDEF_
#define _H_STDDEF_

#ifdef __cplusplus
extern "C" {
#endif

/* size_t: defines the maximum object size type */
#if defined(__SIZE_T_IS_UCHAR__)
  typedef unsigned char  size_t;
#elif defined(__SIZE_T_IS_USHORT__)
  typedef unsigned short size_t;
#elif defined(__SIZE_T_IS_UINT__)
  typedef unsigned int   size_t;
#elif defined(__SIZE_T_IS_ULONG__)
  typedef unsigned long  size_t;
#else
  typedef unsigned int   size_t;
#endif

/* ptrdiff_t: defines the maximum pointer difference type */
#if defined(__PTRDIFF_T_IS_CHAR__)
  typedef signed char   ptrdiff_t;
#elif defined(__PTRDIFF_T_IS_SHORT__)
  typedef signed short  ptrdiff_t;
#elif defined(__PTRDIFF_T_IS_INT__)
  typedef signed int    ptrdiff_t;
#elif defined(__PTRDIFF_T_IS_LONG__)
  typedef signed long   ptrdiff_t;
#else
  typedef signed int    ptrdiff_t;
#endif

/* wchar_t: defines the type of wide character */
#if defined(__WCHAR_T_IS_UCHAR__)
  typedef unsigned char  wchar_t;
#elif defined(__WCHAR_T_IS_USHORT__)
  typedef unsigned short wchar_t;
#elif defined(__WCHAR_T_IS_UINT__)
  typedef unsigned int   wchar_t;
#elif defined(__WCHAR_T_IS_ULONG__)
  typedef unsigned long  wchar_t;
#else
  typedef unsigned char  wchar_t;
#endif


typedef unsigned long clock_t;
typedef unsigned long time_t;

#define offsetof(type, member) ((size_t) &(((type *) 0)->member))
#define NULL                   ((void *) 0)

#ifdef __cplusplus
 }
#endif

#endif

/*****************************************************/
/* end stddef.h */