Manpage of ISWLOWER

ISWLOWER

Section: Linux Programmer's Manual (3)
Updated: 2015-08-08
Index
 

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 wcis 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 wcwhich are equal to towlower(wc)and different from towupper(wc).

The wide-character class "lower" always contains at least the letters aqaaq to aqzaq.  

RETURN VALUE

The iswlower() function returns nonzero if wcis a wide character belonging to the wide-character class "lower". Otherwise, it returns zero.  

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).
InterfaceAttributeValue
iswlower() Thread safetyMT-Safe locale
 

CONFORMING TO

POSIX.1-2001, POSIX.1-2008, C99.  

NOTES

The behavior of iswlower() depends on the LC_CTYPEcategory 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)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ATTRIBUTES
CONFORMING TO
NOTES
SEE ALSO

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Time: 22:27:58 GMT, June 20, 2016