include/stddef.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*      $OpenBSD: stddef.h,v 1.2 1997/09/21 10:45:52 niklas Exp $       */
  24 /*      $NetBSD: stddef.h,v 1.4 1994/10/26 00:56:26 cgd Exp $   */
  25
  26 /*-
  27  * Copyright (c) 1990 The Regents of the University of California.
  28  * All rights reserved.
  29  *
  30  * Redistribution and use in source and binary forms, with or without
  31  * modification, are permitted provided that the following conditions
  32  * are met:
  33  * 1. Redistributions of source code must retain the above copyright
  34  *    notice, this list of conditions and the following disclaimer.
  35  * 2. Redistributions in binary form must reproduce the above copyright
  36  *    notice, this list of conditions and the following disclaimer in the
  37  *    documentation and/or other materials provided with the distribution.
  38  * 3. All advertising materials mentioning features or use of this software
  39  *    must display the following acknowledgement:
  40  *      This product includes software developed by the University of
  41  *      California, Berkeley and its contributors.
  42  * 4. Neither the name of the University nor the names of its contributors
  43  *    may be used to endorse or promote products derived from this software
  44  *    without specific prior written permission.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  56  * SUCH DAMAGE.
  57  *
  58  *      @(#)stddef.h    5.5 (Berkeley) 4/3/91
  59  */
  60
  61 #if !defined(__STDDEF_H__)
  62
  63 #if !defined(__need_wchar_t) && !defined(__need_size_t) \
  64     && !defined(__need_ptrdiff_t) && !defined(__need_NULL) \
  65     && !defined(__need_wint_t) && !defined(__need_rsize_t)
  66 #define __STDDEF_H__
  67 #endif /* none of __need_* defined */
  68
  69 #include <_types.h>
  70
  71 #if defined(__STDDEF_H__) || defined(__need_ptrdiff_t)
  72 #include <sys/_types/_ptrdiff_t.h>
  73 #endif /* __STDDEF_H__ || __need_ptrdiff_t */
  74
  75 #if defined(__STDDEF_H__) || defined(__need_size_t)
  76 /* DO NOT REMOVE THIS COMMENT: fixincludes needs to see:
  77  * _GCC_SIZE_T */
  78 #include <sys/_types/_size_t.h>
  79 #endif /* __STDDEF_H__ || __need_size_t */
  80
  81 #if (defined(__STDDEF_H__) && defined(__STDC_WANT_LIB_EXT1__) && __STDC_WANT_LIB_EXT1__ >= 1) || defined(__need_rsize_t)
  82 #include <sys/_types/_rsize_t.h>
  83 #endif /* (__STDDEF_H__ && __STDC_WANT_LIB_EXT1__ >= 1) || __need_rsize_t */
  84
  85 #if defined(__STDDEF_H__) || defined(__need_wchar_t)
  86 #include <sys/_types/_wchar_t.h>
  87 #endif /* __STDDEF_H__ || __need_wchar_t */
  88
  89 #if (defined(__STDDEF_H__) && !defined(_ANSI_SOURCE) && (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))) \
  90     || defined(__need_wint_t)
  91 #include <sys/_types/_wint_t.h>
  92 #endif /* __STDDEF_H__ && !_ANSI_SOURCE && (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) || __need_wchar_t */
  93
  94 #if defined(__STDDEF_H__) || defined(__need_NULL)
  95 #include <sys/_types/_null.h>
  96 #endif /* __STDDEF_H__ || __need_NULL */
  97
  98 #ifdef __STDDEF_H__
  99 #if defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 5 || __GNUC__ > 3)
 100 #ifndef __offsetof      /* Deprecated: for source compatibility only */
 101 #define __offsetof(type, field) __builtin_offsetof(type, field)
 102 #endif
 103 #define offsetof(type, field) __builtin_offsetof(type, field)
 104 #else /* ! (gcc >= 3.5) */
 105 #ifndef __offsetof      /* Deprecated: for source compatibility only */
 106 #define __offsetof(type, field) ((size_t)(&((type *)0)->field))
 107 #endif
 108 #define offsetof(type, field) ((size_t)(&((type *)0)->field))
 109 #endif /* (gcc >= 3.5) */
 110 #endif /* __STDDEF_H__ */
 111
 112 #endif /* __STDDEF_H__ */
 113
 114 #undef __need_ptrdiff_t
 115 #undef __need_size_t
 116 #undef __need_wchar_t
 117 #undef __need_wint_t
 118 #undef __need_NULL