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stddef.h
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C/C++ Source or Header
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1996-09-28
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741b
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42 lines
/* ANSI common definitions */
/* $Id: stddef.h,v 1.3 93/05/05 21:18:23 sjg Exp $ */
#ifndef NULL
#if __STDC__
#define NULL (void*)0
#else
#define NULL 0
#endif
#endif
#ifndef _STDDEF_H
#define _STDDEF_H
/* doesn't really belong here, but the library function need it */
#ifndef ARGS
# ifdef __STDC__
# define ARGS(args) args
# else
# define ARGS(args) ()
# ifdef VOID
# define void VOID
# endif
# define const
# define volatile
# endif
#endif
#ifdef HAVE_SYS_STDTYPES
# include <sys/stdtypes.h>
#else
typedef unsigned size_t; /* may need long */
typedef int ptrdiff_t;
#endif /* HAVE_SYS_STDTYPES */
#define offsetof(type,id) ((size_t)&((type*)NULL)->id)
extern int errno; /* really belongs in <errno.h> */
#endif