iswblank

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  charac-
       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 ALSO
       isblank(3), iswctype(3)

NOTES
       The behaviour of iswblank depends on the LC_CTYPE category of the  cur-
       rent locale.



GNU                               1999-07-25                       ISWBLANK(3)