BSD 4_3_Net_2 release
[unix-history] / usr / src / sys / sys / cdefs.h
CommitLineData
0ce49f12 1/*
af359dea 2 * Copyright (c) 1991 The Regents of the University of California.
0ce49f12
KB
3 * All rights reserved.
4 *
c0567266
KB
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
af359dea
C
32 *
33 * @(#)cdefs.h 7.6 (Berkeley) 5/4/91
0ce49f12
KB
34 */
35
91befe9c
KB
36#ifndef _CDEFS_H_
37#define _CDEFS_H_
38
39#if defined(__cplusplus)
40#define __BEGIN_DECLS extern "C" {
41#define __END_DECLS };
42#else
43#define __BEGIN_DECLS
44#define __END_DECLS
45#endif
0ce49f12 46
2e5316ab 47/*
af359dea
C
48 * The __CONCAT macro is used to concatenate parts of symbol names, e.g.
49 * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
50 * The __CONCAT macro is a bit tricky -- make sure you don't put spaces
51 * in between its arguments. __CONCAT can also concatenate double-quoted
52 * strings produced by the __STRING macro, but this only works with ANSI C.
2e5316ab 53 */
91befe9c 54#if defined(__STDC__) || defined(__cplusplus)
2e5316ab 55#define __P(protos) protos /* full-blown ANSI C */
91befe9c
KB
56#define __CONCAT(x,y) x ## y
57#define __STRING(x) #x
af359dea
C
58
59#else /* !(__STDC__ || __cplusplus) */
60#define __P(protos) () /* traditional C preprocessor */
61#define __CONCAT(x,y) x/**/y
62#define __STRING(x) "x"
63
91befe9c 64#ifdef __GNUC__
2e5316ab 65#define const __const /* GCC: ANSI C with -traditional */
91befe9c
KB
66#define inline __inline
67#define signed __signed
68#define volatile __volatile
af359dea
C
69
70#else /* !__GNUC__ */
2e5316ab 71#define const /* delete ANSI C keywords */
91befe9c 72#define inline
0ce49f12 73#define signed
91befe9c 74#define volatile
af359dea
C
75#endif /* !__GNUC__ */
76#endif /* !(__STDC__ || __cplusplus) */
91befe9c
KB
77
78#endif /* !_CDEFS_H_ */