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RedHat 9 (Linux i386) - man page for iswblank (redhat section 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);

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 sub-
       classes "alnum", "alpha", "upper", "lower", "digit", "xdigit", "punct".

       The wide character class "blank" always contains at least the space character and the con-
       trol 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					    1999-07-25				      ISWBLANK(3)


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