home *** CD-ROM | disk | FTP | other *** search
- /***
- *stddef.h - definitions/declarations for common constants, types, variables
- *
- * Copyright (c) 1985-1992, Microsoft Corporation. All rights reserved.
- *
- *Purpose:
- * This file contains definitions and declarations for some commonly
- * used constants, types, and variables.
- * [ANSI]
- *
- ****/
-
- #ifndef _INC_STDDEF
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- #if (_MSC_VER <= 600)
- #define __cdecl _cdecl
- #define __far _far
- #define __near _near
- #endif
-
- /* define the NULL pointer value and the offsetof() macro */
-
- #ifndef NULL
- #ifdef __cplusplus
- #define NULL 0
- #else
- #define NULL ((void *)0)
- #endif
- #endif
-
-
- /* offset of field m in a struct s */
-
- #define offsetof(s,m) (size_t)( (char *)&(((s *)0)->m) - (char *)0 )
-
-
- /* errno declaration */
-
- #ifdef _MT
- extern int __far * __cdecl __far volatile _errno(void);
- #define errno (*_errno())
- #else
- extern int __near __cdecl volatile errno;
- #endif
-
-
- /* define the implementation dependent size types */
-
- #ifndef _PTRDIFF_T_DEFINED
- typedef int ptrdiff_t;
- #define _PTRDIFF_T_DEFINED
- #endif
-
- #ifndef _SIZE_T_DEFINED
- typedef unsigned int size_t;
- #define _SIZE_T_DEFINED
- #endif
-
- #ifndef _WCHAR_T_DEFINED
- typedef unsigned short wchar_t;
- #define _WCHAR_T_DEFINED
- #endif
-
-
- #ifdef _MT
- /* define pointer to thread id value */
-
- extern int __far *_threadid;
- #endif
-
- #ifdef __cplusplus
- }
- #endif
-
- #define _INC_STDDEF
- #endif
-