NAME
iswblank - test for whitespace wide character
SYNOPSIS
#include <wctype.h>
I int iswblank(wint_t wc );
DESCRIPTION
The
R 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
R iswblank ()
function returns non-zero
if wc is a wide character
belonging to the wide-character class "blank".
Otherwise it returns zero.
CONFORMING TO
POSIX.1-2001.
NOTES
The behavior of
R iswblank ()
depends on the
LC_CTYPE
category of the
current locale.
SEE ALSO
ČLÁNKY DO MAILU