xref: /optee_os/lib/libutils/isoc/include/sys/cdefs.h (revision bc420748bfc44a9e09000a3966fc59e9e0219df4)
1 /*
2  * Copyright (c) 2014, STMicroelectronics International N.V.
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 are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice,
9  * this list of conditions and the following disclaimer.
10  *
11  * 2. Redistributions in binary form must reproduce the above copyright notice,
12  * this list of conditions and the following disclaimer in the documentation
13  * and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
19  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25  * POSSIBILITY OF SUCH DAMAGE.
26  */
27 #ifndef SYS_CDEFS_H
28 #define SYS_CDEFS_H
29 
30 /*
31  * GCC 2.95 provides `__restrict' as an extension to C90 to support the
32  * C99-specific `restrict' type qualifier.  We happen to use `__restrict' as
33  * a way to define the `restrict' type qualifier without disturbing older
34  * software that is unaware of C99 keywords.
35  */
36 #if !(__GNUC__ == 2 && __GNUC_MINOR__ == 95)
37 #if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901 || defined(lint)
38 #define __restrict
39 #else
40 #define __restrict      restrict
41 #endif
42 #endif
43 
44 #endif /*SYS_CDEFS_H*/
45