/*  $OpenBSD: stddef.h,v 1.10 2009/09/22 21:40:02 jsg Exp $ */
/*  $NetBSD: stddef.h,v 1.4 1994/10/26 00:56:26 cgd Exp $   */

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *  @(#)stddef.h    5.5 (Berkeley) 4/3/91
 */

#ifndef _STDDEF_H_
#define _STDDEF_H_

#include <sys/cdefs.h>
#include <sys/_types.h>

#ifndef _PTRDIFF_T_DEFINED_
#define _PTRDIFF_T_DEFINED_
typedef __ptrdiff_t ptrdiff_t;
#endif

#ifndef _SIZE_T_DEFINED_
#define _SIZE_T_DEFINED_
typedef __size_t    size_t;
#endif

#if !defined(_WCHAR_T_DEFINED_) && !defined(__cplusplus)
#define _WCHAR_T_DEFINED_
#ifndef __WCHAR_TYPE__
#define __WCHAR_TYPE__ int
#endif
typedef __WCHAR_TYPE__ wchar_t;
#endif

#ifndef NULL
#ifdef __cplusplus
#define NULL        0
#else
#define NULL        ((void *)0)
#endif
#endif

#define offsetof(type, member)  ((size_t)(&((type *)0)->member))

#endif /* _STDDEF_H_ */