source: mainline/abi/include/_bits/decls.h

Last change on this file was f0378c6, checked in by Jiří Zárevúcky <zarevucky.jiri@…>, 21 months ago

Add CONSTEXPR for headers shared by C and C++

  • Property mode set to 100644
File size: 2.1 KB
Line 
1/*
2 * Copyright (c) 2019 Jiří Zárevúcky
3 * All rights reserved.
4 *
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 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup bits
30 * @{
31 */
32/** @file
33 */
34
35#ifndef _BITS_DECLS_H_
36#define _BITS_DECLS_H_
37
38#ifdef __cplusplus
39
40#define __HELENOS_DECLS_BEGIN \
41 namespace helenos { \
42 extern "C" {
43
44#define __HELENOS_DECLS_END \
45 } \
46 }
47
48#define __C_DECLS_BEGIN \
49 extern "C" {
50
51#define __C_DECLS_END \
52 }
53
54#else /* !__cplusplus */
55
56#define __HELENOS_DECLS_BEGIN
57#define __HELENOS_DECLS_END
58#define __C_DECLS_BEGIN
59#define __C_DECLS_END
60
61#endif /* __cplusplus */
62
63/*
64 * __CONSTEXPR for headers shared by C and C++. Headers that are purely for
65 * C++ sources should use constexpr directly.
66 */
67#ifdef __cplusplus
68#define __CONSTEXPR constexpr
69#else
70#define __CONSTEXPR
71#endif
72
73#endif
74
75/** @}
76 */
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