1 /* stdbool.h for GNU. */ 2 #ifndef __STDBOOL_H__ 3 #define __STDBOOL_H__ 1 4 5 #if defined(__BEOS__) || defined(__HAIKU__) 6 typedef unsigned char _Bool; 7 #define bool _Bool 8 #define false 0 9 #define true 1 10 #else 11 12 /* The type `bool' must promote to `int' or `unsigned int'. The constants 13 `true' and `false' must have the value 0 and 1 respectively. */ 14 typedef enum 15 { 16 false = 0, 17 true = 1 18 } bool; 19 20 /* The names `true' and `false' must also be made available as macros. */ 21 #define false false 22 #define true true 23 24 #endif 25 26 /* Signal that all the definitions are present. */ 27 #define __bool_true_false_are_defined 1 28 29 #endif /* stdbool.h */ 30