stddef.h revision 1.5
1/* $OpenBSD: stddef.h,v 1.5 2002/10/25 21:55:28 millert Exp $ */ 2/* $NetBSD: stddef.h,v 1.4 1994/10/26 00:56:26 cgd Exp $ */ 3 4/*- 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)stddef.h 5.5 (Berkeley) 4/3/91 37 */ 38 39#ifndef _STDDEF_H_ 40#define _STDDEF_H_ 41 42#include <machine/ansi.h> 43 44typedef _BSD_PTRDIFF_T_ ptrdiff_t; 45 46#ifdef _BSD_SIZE_T_ 47typedef _BSD_SIZE_T_ size_t; 48#undef _BSD_SIZE_T_ 49#endif 50 51#ifdef _BSD_WCHAR_T_ 52/* in C++, wchar_t is a built-in type */ 53#ifndef __cplusplus 54typedef _BSD_WCHAR_T_ wchar_t; 55#undef _BSD_WCHAR_T_ 56#endif 57#endif 58 59#ifndef NULL 60#ifdef __GNUG__ 61#define NULL __null 62#else 63#define NULL 0L 64#endif 65#endif 66 67#define offsetof(type, member) ((size_t)(&((type *)0)->member)) 68 69#endif /* _STDDEF_H_ */ 70