1/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
2#if !defined _GL_STDBOOL_H
3#if (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95))
4#include <stdbool.h>
5#else
6/* Copyright (C) 2001-2003, 2006-2009 Free Software Foundation, Inc.
7   Written by Bruno Haible <haible@clisp.cons.org>, 2001.
8
9   This program is free software; you can redistribute it and/or modify
10   it under the terms of the GNU General Public License as published by
11   the Free Software Foundation; either version 2, or (at your option)
12   any later version.
13
14   This program is distributed in the hope that it will be useful,
15   but WITHOUT ANY WARRANTY; without even the implied warranty of
16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17   GNU General Public License for more details.
18
19   You should have received a copy of the GNU General Public License
20   along with this program; if not, write to the Free Software Foundation,
21   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
22
23#ifndef _UNISTRING_STDBOOL_H
24#define _UNISTRING_STDBOOL_H
25
26/* ISO C 99 <stdbool.h> for platforms that lack it.  */
27
28/* Usage suggestions:
29
30   Programs that use <stdbool.h> should be aware of some limitations
31   and standards compliance issues.
32
33   Standards compliance:
34
35       - <stdbool.h> must be #included before 'bool', 'false', 'true'
36         can be used.
37
38       - You cannot assume that sizeof (bool) == 1.
39
40       - Programs should not undefine the macros bool, true, and false,
41         as C99 lists that as an "obsolescent feature".
42
43   Limitations of this substitute, when used in a C89 environment:
44
45       - <stdbool.h> must be #included before the '_Bool' type can be used.
46
47       - You cannot assume that _Bool is a typedef; it might be a macro.
48
49       - Bit-fields of type 'bool' are not supported.  Portable code
50         should use 'unsigned int foo : 1;' rather than 'bool foo : 1;'.
51
52       - In C99, casts and automatic conversions to '_Bool' or 'bool' are
53         performed in such a way that every nonzero value gets converted
54         to 'true', and zero gets converted to 'false'.  This doesn't work
55         with this substitute.  With this substitute, only the values 0 and 1
56         give the expected result when converted to _Bool' or 'bool'.
57
58   Also, it is suggested that programs use 'bool' rather than '_Bool';
59   this isn't required, but 'bool' is more common.  */
60
61
62/* 7.16. Boolean type and values */
63
64/* For the sake of symbolic names in gdb, we define true and false as
65   enum constants, not only as macros.
66   It is tempting to write
67      typedef enum { false = 0, true = 1 } _Bool;
68   so that gdb prints values of type 'bool' symbolically. But if we do
69   this, values of type '_Bool' may promote to 'int' or 'unsigned int'
70   (see ISO C 99 6.7.2.2.(4)); however, '_Bool' must promote to 'int'
71   (see ISO C 99 6.3.1.1.(2)).  So we add a negative value to the
72   enum; this ensures that '_Bool' promotes to 'int'.  */
73#if defined __cplusplus
74  /* Assume the compiler has 'bool' and '_Bool'.  */
75#else
76   /* If @HAVE__BOOL@:
77        Some HP-UX cc and AIX IBM C compiler versions have compiler bugs when
78        the built-in _Bool type is used.  See
79          http://gcc.gnu.org/ml/gcc-patches/2003-12/msg02303.html
80          http://lists.gnu.org/archive/html/bug-coreutils/2005-11/msg00161.html
81          http://lists.gnu.org/archive/html/bug-coreutils/2005-10/msg00086.html
82        Similar bugs are likely with other compilers as well; this file
83        wouldn't be used if <stdbool.h> was working.
84        So we override the _Bool type.
85      If !@HAVE__BOOL@:
86        Need to define _Bool ourselves. As 'signed char' or as an enum type?
87        Use of a typedef, with SunPRO C, leads to a stupid
88          "warning: _Bool is a keyword in ISO C99".
89        Use of an enum type, with IRIX cc, leads to a stupid
90          "warning(1185): enumerated type mixed with another type".
91        Even the existence of an enum type, without a typedef,
92          "Invalid enumerator. (badenum)" with HP-UX cc on Tru64.
93        The only benefit of the enum, debuggability, is not important
94        with these compilers.  So use 'signed char' and no enum.  */
95# define _Bool signed char
96#endif
97#define bool _Bool
98
99/* The other macros must be usable in preprocessor directives.  */
100#define false 0
101#define true 1
102#define __bool_true_false_are_defined 1
103
104#endif /* _UNISTRING_STDBOOL_H */
105#endif
106#endif
107