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