35 lines
859 B
C
35 lines
859 B
C
/*
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* stddef.h - common definitions
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*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*/
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/* $Header$ */
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#if !defined(_STDDEF_H)
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#define _STDDEF_H
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#define NULL ((void *)0)
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#define offsetof(type, ident) ((size_t) &(((type *)0)->ident))
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#if _EM_PSIZE == _EM_WSIZE
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typedef int ptrdiff_t; /* result of substracting two pointers */
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#elif _EM_PSIZE == _EM_LSIZE
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typedef long ptrdiff_t; /* result of substracting two pointers */
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#else
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#error garbage pointer size
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#endif /* _EM_PSIZE */
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#if !defined(_SIZE_T)
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#define _SIZE_T
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typedef unsigned int size_t; /* type returned by sizeof */
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#endif /* _SIZE_T */
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#if !defined(_WCHAR_T)
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#define _WCHAR_T
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typedef char wchar_t; /* type expanded character set */
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#endif /* _WCHAR_T */
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#endif /* _STDDEF_H */
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