ISWBLANK
Section: Linux Programmer's Manual (3)
Updated: 2014-02-10
Index
Return to Main Contents
NAME
iswblank - test for whitespace wide character
SYNOPSIS
#include <wctype.h>
int iswblank(wint_t wc);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
iswblank():
-
_XOPEN_SOURCE >= 600 || _ISOC99_SOURCE ||
_POSIX_C_SOURCE >= 200112L;
or
cc -std=c99
DESCRIPTION
The
iswblank()
function is the wide-character equivalent of the
isblank(3)
function.
It tests whether wc is a wide character
belonging to the wide-character class "blank".
The wide-character class "blank" is a subclass of the wide-character class
"space".
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
from its subclasses "alnum", "alpha", "upper", "lower", "digit",
"xdigit", "punct".
The wide-character class "blank" always contains
at least the space character
and the control character '\t'.
RETURN VALUE
The
iswblank()
function returns nonzero
if wc is a wide character
belonging to the wide-character class "blank".
Otherwise, it returns zero.
ATTRIBUTES
Multithreading (see pthreads(7))
The
iswblank()
function is thread-safe with exceptions.
It can be safely used in multithreaded applications, as long as
setlocale(3)
is not called to change the locale during its execution.
CONFORMING TO
POSIX.1-2001.
NOTES
The behavior of
iswblank()
depends on the
LC_CTYPE
category of the
current locale.
SEE ALSO
isblank(3),
iswctype(3)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ATTRIBUTES
-
- Multithreading (see pthreads(7))
-
- CONFORMING TO
-
- NOTES
-
- SEE ALSO
-
This document was created by
man2html,
using the manual pages.
Time: 02:55:05 GMT, September 18, 2014