2004-11-03 13:51:07 +00:00
|
|
|
.\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
|
|
|
|
|
.\"
|
|
|
|
|
.\" This is free documentation; you can redistribute it and/or
|
|
|
|
|
.\" modify it under the terms of the GNU General Public License as
|
|
|
|
|
.\" published by the Free Software Foundation; either version 2 of
|
|
|
|
|
.\" the License, or (at your option) any later version.
|
|
|
|
|
.\"
|
|
|
|
|
.\" References consulted:
|
|
|
|
|
.\" GNU glibc-2 source code and manual
|
|
|
|
|
.\" Dinkumware C library reference http://www.dinkumware.com/
|
|
|
|
|
.\" OpenGroup's Single Unix specification http://www.UNIX-systems.org/online.html
|
|
|
|
|
.\" ISO/IEC 9899:1999
|
|
|
|
|
.\"
|
|
|
|
|
.TH ISWBLANK 3 1999-07-25 "GNU" "Linux Programmer's Manual"
|
|
|
|
|
.SH NAME
|
|
|
|
|
iswblank \- test for whitespace wide character
|
|
|
|
|
.SH SYNOPSIS
|
|
|
|
|
.nf
|
|
|
|
|
.B #include <wctype.h>
|
|
|
|
|
.sp
|
|
|
|
|
.BI "int iswblank(wint_t " wc );
|
|
|
|
|
.fi
|
|
|
|
|
.SH DESCRIPTION
|
2007-05-12 09:06:04 +00:00
|
|
|
The
|
|
|
|
|
.BR iswblank ()
|
|
|
|
|
function is the wide-character equivalent of the
|
|
|
|
|
.BR isblank (3)
|
|
|
|
|
function.
|
2007-04-12 22:42:49 +00:00
|
|
|
It tests whether \fIwc\fP is a wide character
|
2007-04-24 19:40:35 +00:00
|
|
|
belonging to the wide-character class "blank".
|
2004-11-03 13:51:07 +00:00
|
|
|
.PP
|
2007-04-24 19:40:35 +00:00
|
|
|
The wide-character class "blank" is a subclass of the wide-character class
|
2004-11-03 13:51:07 +00:00
|
|
|
"space".
|
|
|
|
|
.PP
|
2007-04-24 19:40:35 +00:00
|
|
|
Being a subclass of the wide-character class "space",
|
|
|
|
|
the wide-character class "blank" is disjoint from the
|
|
|
|
|
wide-character class "graph" and therefore also disjoint
|
2007-04-24 19:06:06 +00:00
|
|
|
from its subclasses "alnum", "alpha", "upper", "lower", "digit",
|
2004-11-03 13:51:07 +00:00
|
|
|
"xdigit", "punct".
|
|
|
|
|
.PP
|
2007-04-24 19:40:35 +00:00
|
|
|
The wide-character class "blank" always contains
|
2007-04-24 19:06:06 +00:00
|
|
|
at least the space character
|
2004-11-03 13:51:07 +00:00
|
|
|
and the control character '\\t'.
|
|
|
|
|
.SH "RETURN VALUE"
|
2007-05-12 09:06:04 +00:00
|
|
|
The
|
|
|
|
|
.BR iswblank ()
|
|
|
|
|
function returns non-zero
|
2007-04-24 19:06:06 +00:00
|
|
|
if \fIwc\fP is a wide character
|
2007-04-24 19:40:35 +00:00
|
|
|
belonging to the wide-character class "blank".
|
2007-04-12 22:42:49 +00:00
|
|
|
Otherwise it returns zero.
|
2004-11-03 13:51:07 +00:00
|
|
|
.SH "CONFORMING TO"
|
2007-04-27 16:49:26 +00:00
|
|
|
POSIX.1-2001.
|
2004-11-03 13:51:07 +00:00
|
|
|
.SH NOTES
|
2007-05-12 09:06:04 +00:00
|
|
|
The behaviour of
|
|
|
|
|
.BR iswblank ()
|
|
|
|
|
depends on the LC_CTYPE category of the
|
2004-11-03 13:51:07 +00:00
|
|
|
current locale.
|
2007-05-16 18:25:50 +00:00
|
|
|
.SH "SEE ALSO"
|
|
|
|
|
.BR isblank (3),
|
|
|
|
|
.BR iswctype (3)
|
