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 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 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 ALSO

       isblank(3), iswctype(3)

NOTES

       The behaviour of iswblank depends on the LC_CTYPE category of the current locale.

GNU                                               July 25, 1999                                      ISWBLANK(3)