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



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 char-
       acter 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-charac-
       ter class "cntrl".

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

       Being a subclass of the wide-character class "alpha", the wide-character class "lower" is disjoint from the  wide-charac-
       ter 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".   Other-
       wise 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 3.25 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                                                        1999-07-25                                                ISWLOWER(3)