trusty (3) iswlower.3.gz

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NAME
       iswlower - test for lowercase wide character


SYNOPSIS
       #include <wctype.h>

       int iswlower(wint_t wc);


DESCRIPTION
       The iswlower() function is the wide-character equivalent of the islower(3) function.  It tests whether wc
       is a wide character belonging to the wide-character class "lower".

       The wide-character class "lower" is a subclass of the wide-character class "alpha", and therefore also  a
       subclass  of  the  wide-character  class  "alnum",  of  the wide-character class "graph" and of the wide-
       character class "print".

       Being a subclass of the wide-character class "print", the wide-character class "lower" is  disjoint  from
       the wide-character class "cntrl".

       Being  a  subclass of the wide-character class "graph", the wide-character class "lower" is disjoint from
       the wide-character class "space" and its subclass "blank".

       Being a subclass of the wide-character class "alnum", the wide-character class "lower" is  disjoint  from
       the wide-character class "punct".

       Being  a  subclass of the wide-character class "alpha", the wide-character class "lower" is disjoint from
       the wide-character class "digit".

       The wide-character class "lower" contains at least those characters wc which are  equal  to  towlower(wc)
       and different from towupper(wc).

       The wide-character class "lower" always contains at least the letters 'a' to 'z'.


RETURN VALUE
       The  iswlower()  function returns nonzero if wc is a wide character belonging to the wide-character class
       "lower".  Otherwise it returns zero.


CONFORMING TO
       C99.


NOTES
       The behavior of iswlower() depends on the LC_CTYPE category of the current locale.

       This function is not very appropriate for dealing with Unicode characters, because  Unicode  knows  about
       three cases: upper, lower and title case.


SEE ALSO
       islower(3), iswctype(3), towlower(3)


COLOPHON
       This  page  is  part  of  release 3.54 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/.