NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | CONFORMING TO | NOTES | SEE ALSO | COLOPHON
ISWLOWER(3) Linux Programmer's Manual ISWLOWER(3)
iswlower - test for lowercase wide character
#include <wctype.h>
int iswlower(wint_t wc);
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'.
The iswlower() function returns non-zero if wc is a wide character belonging
to the wide-character class "lower". Otherwise it returns zero.
C99.
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.
islower(3), iswctype(3), towlower(3)
This page is part of release 3.23 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)