ISWBLANK(3) Linux Programmer's Manual ISWBLANK(3)NAME
iswblank - test for whitespace wide character
SYNOPSIS
#include <wctype.h>
int iswblank(wint_t wc);
DESCRIPTION
The iswblank() function is the wide-character equivalent of the
isblank() 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 characā
ter 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 non-zero if wc is a wide character
belonging to the wide character class "blank". Otherwise it returns
zero.
CONFORMING TO
This function is a GNU extension.
SEE ALSOisblank(3), iswctype(3)NOTES
The behaviour of iswblank() depends on the LC_CTYPE category of the
current locale.
GNU 1999-07-25 ISWBLANK(3)