iswblank - phpMan

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 dis-
       joint 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                               1999-07-25                       ISWBLANK(3)

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