2010-05-14 06:45:39 +04:00
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.\" $NetBSD: stdbool.3,v 1.2 2010/05/14 02:45:39 joerg Exp $
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2010-03-21 14:12:52 +03:00
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.\"
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.\" Copyright (c) 2010 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Jukka Ruohonen.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd March 21, 2010
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.Dt STDBOOL 3
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2010-05-14 06:45:39 +04:00
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.Os
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2010-03-21 14:12:52 +03:00
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.Sh NAME
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.Nm stdbool
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.Nd standard boolean types
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.Sh SYNOPSIS
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.In stdbool.h
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.Sh DESCRIPTION
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The
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.In stdbool.h
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header defines four macros:
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.Bl -enum -offset 4n
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.It
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.Vt bool ,
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which expands to
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.Vt _Bool ;
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.It
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.Vt true ,
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which expands to the integer constant 1;
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.It
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.Vt false ,
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which expands to the integer constant 0; and
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.It
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.Vt __bool_true_false_are_defined ,
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which expands to the constant 1.
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.El
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.Pp
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The ability to undefine and redefine the macros
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.Vt bool ,
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.Vt true ,
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and
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.Vt false
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is an obsolescent feature that may
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be withdrawn in a future version of a standard.
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.Sh SEE ALSO
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.Xr stdint 3
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.Sh STANDARDS
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The
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.In stdbool.h
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header conforms to
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.St -isoC-99
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and
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.St -p1003.1-2001 .
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.Sh HISTORY
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The
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.In stdbool.h
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header was first introduced in
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.Nx 1.6 .
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