Man Pages

iswlower(3) - phpMan iswlower(3) - phpMan

Command: man perldoc info search(apropos)  


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 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  sub-
       class  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 dif-
       ferent from towupper(wc).

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

RETURN VALUE
       The  iswlower()  function  returns  non-zero  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 3.22 of the Linux man-pages project.  A description of the project, and informa-
       tion about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.



GNU                               1999-07-25                       ISWLOWER(3)