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stdbool.h
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1 /*===---- stdbool.h - Standard header for booleans -------------------------===
2  *
3  * Copyright (c) 2008 Eli Friedman
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining a copy
6  * of this software and associated documentation files (the "Software"), to deal
7  * in the Software without restriction, including without limitation the rights
8  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9  * copies of the Software, and to permit persons to whom the Software is
10  * furnished to do so, subject to the following conditions:
11  *
12  * The above copyright notice and this permission notice shall be included in
13  * all copies or substantial portions of the Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
21  * THE SOFTWARE.
22  *
23  *===-----------------------------------------------------------------------===
24  */
25 
26 #ifndef __STDBOOL_H
27 #define __STDBOOL_H
28 
29 /* Don't define bool, true, and false in C++, except as a GNU extension. */
30 #ifndef __cplusplus
31 #define bool _Bool
32 #define true 1
33 #define false 0
34 #elif defined(__GNUC__) && !defined(__STRICT_ANSI__)
35 /* Define _Bool as a GNU extension. */
36 #define _Bool bool
37 #if __cplusplus < 201103L
38 /* For C++98, define bool, false, true as a GNU extension. */
39 #define bool bool
40 #define false false
41 #define true true
42 #endif
43 #endif
44 
45 #define __bool_true_false_are_defined 1
46 
47 #endif /* __STDBOOL_H */