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)
  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 #ifndef _PTRDIFF_T
  73 #define _PTRDIFF_T
  74 typedef __darwin_ptrdiff_t      ptrdiff_t;
  75 #endif /* _PTRDIFF_T */
  76 #endif /* __STDDEF_H__ || __need_ptrdiff_t */
  77
  78 #if defined(__STDDEF_H__) || defined(__need_size_t)
  79 #ifndef _SIZE_T
  80 #define _SIZE_T
  81 /* DO NOT REMOVE THIS COMMENT: fixincludes needs to see:
  82  * _GCC_SIZE_T */
  83 typedef __darwin_size_t         size_t;
  84 #endif /* _SIZE_T */
  85 #endif /* __STDDEF_H__ || __need_size_t */
  86
  87 #if defined(__STDDEF_H__) || defined(__need_wchar_t)
  88 #ifndef __cplusplus
  89 #ifndef _WCHAR_T
  90 #define _WCHAR_T
  91 typedef __darwin_wchar_t        wchar_t;
  92 #endif  /* _WCHAR_T */
  93 #endif  /* __cplusplus */
  94 #endif /* __STDDEF_H__ || __need_wchar_t */
  95
  96 #if (defined(__STDDEF_H__) && !defined(_ANSI_SOURCE) && (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))) \
  97     || defined(__need_wint_t)
  98 #ifndef _WINT_T
  99 #define _WINT_T
 100 typedef __darwin_wint_t         wint_t;
 101 #endif  /* _WINT_T */
 102 #endif /* __STDDEF_H__ && !_ANSI_SOURCE && (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) || __need_wchar_t */
 103
 104 #if defined(__STDDEF_H__) || defined(__need_NULL)
 105 #ifndef NULL
 106 #define NULL __DARWIN_NULL
 107 #endif /* ! NULL */
 108 #endif /* __STDDEF_H__ || __need_NULL */
 109
 110 #ifdef __STDDEF_H__
 111 #if defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 5 || __GNUC__ > 3)
 112 #ifndef __offsetof      /* Deprecated: for source compatability only */
 113 #define __offsetof(type, field) __builtin_offsetof(type, field)
 114 #endif
 115 #define offsetof(type, field) __builtin_offsetof(type, field)
 116 #else /* ! (gcc >= 3.5) */
 117 #ifndef __offsetof      /* Deprecated: for source compatability only */
 118 #define __offsetof(type, field) ((size_t)(&((type *)0)->field))
 119 #endif
 120 #define offsetof(type, field) ((size_t)(&((type *)0)->field))
 121 #endif /* (gcc >= 3.5) */
 122 #endif /* __STDDEF_H__ */
 123
 124 #endif /* __STDDEF_H__ */
 125
 126 #undef __need_ptrdiff_t
 127 #undef __need_size_t
 128 #undef __need_wchar_t
 129 #undef __need_wint_t
 130 #undef __need_NULL