xref: /freebsd/include/stddef.h (revision 4543ef516683042d46f3bd3bb8a4f3f746e00499)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1990, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 #ifndef _STDDEF_H_
33 #define _STDDEF_H_
34 
35 #include <sys/cdefs.h>
36 #include <sys/_null.h>
37 #include <sys/_types.h>
38 
39 #ifndef _PTRDIFF_T_DECLARED
40 typedef	__ptrdiff_t	ptrdiff_t;
41 #define	_PTRDIFF_T_DECLARED
42 #endif
43 
44 #if __BSD_VISIBLE
45 #ifndef _RUNE_T_DECLARED
46 typedef	__rune_t	rune_t;
47 #define	_RUNE_T_DECLARED
48 #endif
49 #endif
50 
51 #ifndef _SIZE_T_DECLARED
52 typedef	__size_t	size_t;
53 #define	_SIZE_T_DECLARED
54 #endif
55 
56 #ifndef	__cplusplus
57 #ifndef _WCHAR_T_DECLARED
58 typedef	___wchar_t	wchar_t;
59 #define	_WCHAR_T_DECLARED
60 #endif
61 #endif
62 
63 #if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L
64 #ifndef __CLANG_MAX_ALIGN_T_DEFINED
65 typedef	__max_align_t	max_align_t;
66 #define __CLANG_MAX_ALIGN_T_DEFINED
67 #define _GCC_MAX_ALIGN_T
68 #endif
69 #endif
70 
71 #define	offsetof(type, field)	__offsetof(type, field)
72 
73 #if __EXT1_VISIBLE
74 /* ISO/IEC 9899:2011 K.3.3.2 */
75 #ifndef _RSIZE_T_DEFINED
76 #define _RSIZE_T_DEFINED
77 typedef size_t rsize_t;
78 #endif
79 #endif /* __EXT1_VISIBLE */
80 
81 #endif /* _STDDEF_H_ */
82