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e20b6c4 Move UCB-licensed code from 4-clause to 3-clause licence.
agc authored Aug 7, 2003
1 /* $NetBSD: struct.h,v 1.5 2003/08/07 09:44:11 agc Exp $ */
723f4fe new RCS ID format.
cgd authored Oct 26, 1994
2
c589a90 initial import of 386bsd-0.1 sources
cgd authored Mar 21, 1993
3 /*-
4332a29 merge lite-2
perry authored Feb 2, 1998
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
c589a90 initial import of 386bsd-0.1 sources
cgd authored Mar 21, 1993
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.
e20b6c4 Move UCB-licensed code from 4-clause to 3-clause licence.
agc authored Aug 7, 2003
15 * 3. Neither the name of the University nor the names of its contributors
c589a90 initial import of 386bsd-0.1 sources
cgd authored Mar 21, 1993
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 *
4332a29 merge lite-2
perry authored Feb 2, 1998
31 * @(#)struct.h 8.1 (Berkeley) 6/2/93
c589a90 initial import of 386bsd-0.1 sources
cgd authored Mar 21, 1993
32 */
33
34 #ifndef _STRUCT_H_
35 #define _STRUCT_H_
36
37 /* Offset of the field in the structure. */
38 #define fldoff(name, field) \
39 ((int)&(((struct name *)0)->field))
40
41 /* Size of the field in the structure. */
42 #define fldsiz(name, field) \
43 (sizeof(((struct name *)0)->field))
44
45 /* Address of the structure from a field. */
46 #define strbase(name, addr, field) \
47 ((struct name *)((char *)(addr) - fldoff(name, field)))
48
49 #endif /* !_STRUCT_H_ */
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