iswblank(3) [redhat man page]

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 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 '	'.

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
								    1999-07-25							       ISWBLANK(3)

ISWBLANK(3)						     Linux Programmer's Manual						       ISWBLANK(3)

NAME

       iswblank - test for whitespace wide character

SYNOPSIS

       #include <wctype.h>

       int iswblank(wint_t wc);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       iswblank():
	      _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L;
	      or cc -std=c99

DESCRIPTION

       The  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 '	'.

RETURN VALUE

       The  iswblank()	function  returns  nonzero  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 iswblank() depends on the LC_CTYPE category of the current locale.

SEE ALSO

       isblank(3), iswctype(3)

COLOPHON

       This page is part of release 3.53 of the Linux man-pages project.  A description of the project, and information about reporting bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

GNU
								    2010-09-20							       ISWBLANK(3)