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bool.h
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1 /*
2  * Project : tin - a Usenet reader
3  * Module : bool.h
4  * Author : Urs Janssen <urs@tin.org>
5  * Created :
6  * Updated : 2013-01-09
7  * Notes :
8  *
9  * Copyright (c) 1997-2020 Urs Janssen <urs@tin.org>
10  * All rights reserved.
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
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15  *
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17  * this list of conditions and the following disclaimer.
18  *
19  * 2. Redistributions in binary form must reproduce the above copyright
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21  * documentation and/or other materials provided with the distribution.
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25  * this software without specific prior written permission.
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39 
40 
41 #ifndef BOOL_H
42 # define BOOL_H 1
43 
44 # if 0
45 /*
46  * This is the correct way, but causes problems on some systems
47  * e.g. SuSE-7.3 (IA-32)
48  */
49 # ifndef __cplusplus
50 # ifdef HAVE_STDBOOL_H
51 # include <stdbool.h>
52 # ifdef _Bool
53  typefdef _Bool t_bool;
54 # endif /* _Bool */
55 # endif /* HAVE_STDBOOL_H */
56 # endif /* __cplusplus */
57 # ifndef FALSE
58 # define FALSE 0
59 # endif /* !FALSE */
60 # ifndef TRUE
61 # define TRUE (!FALSE)
62 # endif /* !TRUE */
63 # ifndef t_bool
64  typedef unsigned t_bool; /* don't make this a char or short! */
65 # endif /* t_bool */
66 
67 # else
68 
69 # ifndef FALSE
70 # define FALSE 0
71 # endif /* !FALSE */
72 
73 # ifndef TRUE
74 # define TRUE (!FALSE)
75 # endif /* !TRUE */
76 
77  typedef unsigned t_bool; /* don't make this a char or short! */
78 
79 # endif /* 0 */
80 
81 # define bool_not(b) ((b) ? FALSE : TRUE)
82 # define bool_equal(a,b) ((a) ? (b) : (bool_not(b)))
83 # define bool_unparse(b) ((b) ? "TRUE" : "FALSE")
84 
85 #endif /* !BOOL_H */
t_bool
unsigned t_bool
Definition: bool.h:77