stdbool.h revision 1.5 
1/* $OpenBSD: stdbool.h,v 1.5 2010/07/24 22:17:03 guenther Exp $ */
2
3/*
4 * Written by Marc Espie, September 25, 1999
5 * Public domain.
6 */
7
8#ifndef	_STDBOOL_H_
9#define	_STDBOOL_H_
10
11#ifndef __cplusplus
12
13#if (defined(__GNUC__) && __GNUC__ >= 3) || defined(__PCC__) || defined(lint)
14/* Support for _C99: type _Bool is already built-in. */
15#define false	0
16#define true	1
17
18#else
19/* `_Bool' type must promote to `int' or `unsigned int'. */
20typedef enum {
21	false = 0,
22	true = 1
23} _Bool;
24
25/* And those constants must also be available as macros. */
26#define	false	false
27#define	true	true
28
29#endif
30
31/* User visible type `bool' is provided as a macro which may be redefined */
32#define bool _Bool
33
34#else /* __cplusplus */
35#define _Bool 	bool
36#define bool 	bool
37#define false 	false
38#define true 	true
39#endif /* __cplusplus */
40
41/* Inform that everything is fine */
42#define __bool_true_false_are_defined 1
43
44#endif /* _STDBOOL_H_ */
45