49 lines
1 KiB
C
49 lines
1 KiB
C
/***
|
|
*stddef.h - definitions/declarations for common constants, types, variables
|
|
*
|
|
* Copyright (c) 1985-1988, Microsoft Corporation. All rights reserved.
|
|
*
|
|
*Purpose:
|
|
* This file contains definitions and declarations for some commonly
|
|
* used constants, types, and variables.
|
|
* [ANSI]
|
|
*
|
|
*******************************************************************************/
|
|
|
|
|
|
#ifndef NO_EXT_KEYS /* extensions enabled */
|
|
#define _CDECL cdecl
|
|
#define _NEAR near
|
|
#else /* extensions not enabled */
|
|
#define _CDECL
|
|
#define _NEAR
|
|
#endif /* NO_EXT_KEYS */
|
|
|
|
|
|
/* define NULL pointer value */
|
|
|
|
#if (defined(M_I86SM) || defined(M_I86MM))
|
|
#define NULL 0
|
|
#elif (defined(M_I86CM) || defined(M_I86LM) || defined(M_I86HM))
|
|
#define NULL 0L
|
|
#endif
|
|
|
|
|
|
/* declare reference to errno */
|
|
|
|
extern int _NEAR _CDECL errno;
|
|
|
|
|
|
/* 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
|
|
|