xref: /illumos-gate/usr/src/head/iso/stddef_iso.h (revision 581cede61ac9c14d8d4ea452562a567189eead78)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*	Copyright (c) 1988 AT&T	*/
23 /*	  All Rights Reserved  	*/
24 
25 
26 /*
27  * Copyright 1999-2003 Sun Microsystems, Inc.  All rights reserved.
28  * Use is subject to license terms.
29  */
30 
31 /*
32  * An application should not include this header directly.  Instead it
33  * should be included only through the inclusion of other Sun headers.
34  *
35  * The contents of this header is limited to identifiers specified in the
36  * C Standard.  Any new identifiers specified in future amendments to the
37  * C Standard must be placed in this header.  If these new identifiers
38  * are required to also be in the C++ Standard "std" namespace, then for
39  * anything other than macro definitions, corresponding "using" directives
40  * must also be added to <stddef.h.h>.
41  */
42 
43 #ifndef _ISO_STDDEF_ISO_H
44 #define	_ISO_STDDEF_ISO_H
45 
46 #pragma ident	"%Z%%M%	%I%	%E% SMI" /* SVr4.0 1.5 */
47 
48 #include <sys/isa_defs.h>
49 
50 #ifdef	__cplusplus
51 extern "C" {
52 #endif
53 
54 #if __cplusplus >= 199711L
55 namespace std {
56 #endif
57 
58 #ifndef	NULL
59 #if defined(_LP64)
60 #define	NULL    0L
61 #else
62 #define	NULL    0
63 #endif
64 #endif
65 
66 #if !defined(_PTRDIFF_T) || __cplusplus >= 199711L
67 #define	_PTRDIFF_T
68 #if defined(_LP64) || defined(_I32LPx)
69 typedef	long	ptrdiff_t;		/* pointer difference */
70 #else
71 typedef int	ptrdiff_t;		/* (historical version) */
72 #endif
73 #endif	/* !_PTRDIFF_T */
74 
75 #if !defined(_SIZE_T) || __cplusplus >= 199711L
76 #define	_SIZE_T
77 #if defined(_LP64) || defined(_I32LPx)
78 typedef unsigned long	size_t;		/* size of something in bytes */
79 #else
80 typedef unsigned int	size_t;		/* (historical version) */
81 #endif
82 #endif	/* !_SIZE_T */
83 
84 #if __cplusplus >= 199711L
85 }
86 #endif /* end of namespace std */
87 
88 #if __cplusplus >= 199711L
89 #define	offsetof(s, m)  (std::size_t)(&(((s *)0)->m))
90 #else
91 #define	offsetof(s, m)  (size_t)(&(((s *)0)->m))
92 #endif
93 
94 #ifdef	__cplusplus
95 }
96 #endif
97 
98 #endif	/* _ISO_STDDEF_ISO_H */
99