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/***
*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
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