1stdbool.h(0P) POSIX Programmer's Manual stdbool.h(0P)
2
3
4
6 This manual page is part of the POSIX Programmer's Manual. The Linux
7 implementation of this interface may differ (consult the corresponding
8 Linux manual page for details of Linux behavior), or the interface may
9 not be implemented on Linux.
10
11
13 stdbool.h — boolean type and values
14
16 #include <stdbool.h>
17
19 The functionality described on this reference page is aligned with the
20 ISO C standard. Any conflict between the requirements described here
21 and the ISO C standard is unintentional. This volume of POSIX.1‐2008
22 defers to the ISO C standard.
23
24 The <stdbool.h> header shall define the following macros:
25
26 bool Expands to _Bool.
27
28 true Expands to the integer constant 1.
29
30 false Expands to the integer constant 0.
31
32 __bool_true_false_are_defined
33 Expands to the integer constant 1.
34
35 An application may undefine and then possibly redefine the macros bool,
36 true, and false.
37
38 The following sections are informative.
39
41 None.
42
44 None.
45
47 The ability to undefine and redefine the macros bool, true, and false
48 is an obsolescent feature and may be removed in a future version.
49
51 None.
52
54 Portions of this text are reprinted and reproduced in electronic form
55 from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
56 -- Portable Operating System Interface (POSIX), The Open Group Base
57 Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
58 cal and Electronics Engineers, Inc and The Open Group. (This is
59 POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
60 event of any discrepancy between this version and the original IEEE and
61 The Open Group Standard, the original IEEE and The Open Group Standard
62 is the referee document. The original Standard can be obtained online
63 at http://www.unix.org/online.html .
64
65 Any typographical or formatting errors that appear in this page are
66 most likely to have been introduced during the conversion of the source
67 files to man page format. To report such errors, see https://www.ker‐
68 nel.org/doc/man-pages/reporting_bugs.html .
69
70
71
72IEEE/The Open Group 2013 stdbool.h(0P)