1993-03-21 12:45:37 +03:00
|
|
|
.\" Copyright (c) 1991 The Regents of the University of California.
|
|
|
|
|
.\" All rights reserved.
|
|
|
|
|
.\"
|
|
|
|
|
.\" This code is derived from software contributed to Berkeley by
|
|
|
|
|
.\" the American National Standards Committee X3, on Information
|
|
|
|
|
.\" Processing Systems.
|
|
|
|
|
.\"
|
|
|
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
|
|
|
.\" modification, are permitted provided that the following conditions
|
|
|
|
|
.\" are met:
|
|
|
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
|
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
|
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
|
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
|
|
|
.\" must display the following acknowledgement:
|
|
|
|
|
.\" This product includes software developed by the University of
|
|
|
|
|
.\" California, Berkeley and its contributors.
|
|
|
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
|
|
|
.\" may be used to endorse or promote products derived from this software
|
|
|
|
|
.\" without specific prior written permission.
|
|
|
|
|
.\"
|
|
|
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
|
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
|
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
|
|
.\" SUCH DAMAGE.
|
|
|
|
|
.\"
|
1993-07-30 12:34:38 +04:00
|
|
|
.\" from: @(#)isspace.3 5.3 (Berkeley) 7/31/91
|
|
|
|
|
.\" $Id: isspace.3,v 1.2 1993/07/30 08:37:34 mycroft Exp $
|
1993-03-21 12:45:37 +03:00
|
|
|
.\"
|
|
|
|
|
.Dd July 31, 1991
|
|
|
|
|
.Dt ISSPACE 3
|
|
|
|
|
.Os
|
|
|
|
|
.Sh NAME
|
|
|
|
|
.Nm isspace
|
|
|
|
|
.Nd white-space character test
|
|
|
|
|
.Sh SYNOPSIS
|
|
|
|
|
.Fd #include <ctype.h>
|
|
|
|
|
.Ft int
|
|
|
|
|
.Fn isspace "int c"
|
|
|
|
|
.Sh DESCRIPTION
|
|
|
|
|
The
|
|
|
|
|
.Fn isspace
|
|
|
|
|
function tests for the standard white-space characters
|
|
|
|
|
.\" or for any
|
|
|
|
|
.\" of an implementation-defined set of characters
|
|
|
|
|
for which
|
|
|
|
|
.Xr isalnum 3
|
|
|
|
|
is false.
|
|
|
|
|
The standard white-space characters are the following:
|
|
|
|
|
.Pp
|
|
|
|
|
.Bl -tag -width xxxxx -offset indent -compact
|
|
|
|
|
.It Sq \0
|
|
|
|
|
Space character.
|
|
|
|
|
.It Li \ef
|
|
|
|
|
Form feed.
|
|
|
|
|
.It Li \en
|
|
|
|
|
New-line.
|
|
|
|
|
.It Li \er
|
|
|
|
|
Carriage return.
|
|
|
|
|
.It Li \et
|
|
|
|
|
Horizontal tab.
|
|
|
|
|
.It Li \ev
|
|
|
|
|
And vertical tab.
|
|
|
|
|
.El
|
|
|
|
|
.Pp
|
|
|
|
|
In the
|
|
|
|
|
.Em ``C''
|
|
|
|
|
locale,
|
|
|
|
|
.Fn isspace
|
|
|
|
|
returns true only for the standard white-space characters.
|
|
|
|
|
.Sh RETURN VALUES
|
|
|
|
|
The
|
|
|
|
|
.Fn isspace
|
|
|
|
|
macro returns zero if the character tests false and
|
|
|
|
|
returns non-zero if the character tests true.
|
|
|
|
|
.Sh SEE ALSO
|
|
|
|
|
.Xr isascii 3 ,
|
|
|
|
|
.Xr isalnum 3 ,
|
|
|
|
|
.Xr isalpha 3 ,
|
|
|
|
|
.Xr iscntrl 3 ,
|
|
|
|
|
.Xr isdigit 3 ,
|
|
|
|
|
.Xr isgraph 3 ,
|
|
|
|
|
.Xr islower 3 ,
|
|
|
|
|
.Xr isprint 3 ,
|
|
|
|
|
.Xr ispunct 3 ,
|
|
|
|
|
.Xr isupper 3 ,
|
|
|
|
|
.Xr isxdigit 3 ,
|
|
|
|
|
.Xr toascii 3 ,
|
|
|
|
|
.Xr tolower 3 ,
|
|
|
|
|
.Xr toupper 3 ,
|
|
|
|
|
.Xr stdio 3
|
|
|
|
|
.Xr ascii 7
|
|
|
|
|
.Sh STANDARDS
|
|
|
|
|
The
|
|
|
|
|
.Fn isspace
|
|
|
|
|
function conforms to
|
|
|
|
|
.St -ansiC .
|
