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.