2004-03-30 07:23:54 +00:00
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.\"
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.\" Copyright (c) 2004 Tim J. Robbins
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.\" All rights reserved.
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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2009-09-03 10:06:37 +00:00
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.Dd September 3, 2009
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2004-03-30 07:23:54 +00:00
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.Dt ISSPECIAL 3
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.Os
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.Sh NAME
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.Nm isspecial
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.Nd special character test
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In ctype.h
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.Ft int
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.Fn isspecial "int c"
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.Sh DESCRIPTION
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The
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.Fn isspecial
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function tests for a special character.
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2009-09-03 10:06:37 +00:00
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.Pp
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.Em NOTE :
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if the value passed to the
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.Fn isspecial
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function is a
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.Vt signed char ,
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as is usually the case, it must be cast to an
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.Vt unsigned char
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to avoid sign-extension errors.
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2004-03-30 07:23:54 +00:00
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.Sh RETURN VALUES
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The
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.Fn isspecial
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function returns zero if the character tests false and
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returns non-zero if the character tests true.
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.Sh SEE ALSO
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.Xr ctype 3 ,
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.Xr iswspecial 3
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.Sh HISTORY
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The
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.Fn isspecial
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function appeared in
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.Bx 4.4 .
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