1 /* 2 * Copyright (c) 2000 Jeroen Ruigrok van der Werven <asmodai@FreeBSD.org> 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 * 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 /* This should be compliant with the ANSI C99 definition */ 30 31 #ifndef _STDBOOL_H_ 32 #define _STDBOOL_H_ 33 34 /* `_Bool' type must promote to `int' or `unsigned int' */ 35 typedef enum { 36 false = 0, 37 true = 1 38 } _Bool; 39 40 /* And those constants must also be available as macros */ 41 #define false false 42 #define true true 43 44 /* User visible type `bool' is provided as a macro which may be redefined */ 45 #define bool _Bool 46 47 /* Inform that everything is fine */ 48 #define __bool_true_false_are_defined 1 49 50 #if __STDC_VERSION__ < 199901L 51 typedef int _Bool; /* not built into pre-C99 compilers */ 52 #endif 53 54 #endif /* _STDBOOL_H_ */ 55