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+'\" t
+.\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
+.\"
+.\" SPDX-License-Identifier: GPL-2.0-or-later
+.\"
+.\" References consulted:
+.\"   GNU glibc-2 source code and manual
+.\"   Dinkumware C library reference http://www.dinkumware.com/
+.\"   OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
+.\"   ISO/IEC 9899:1999
+.\"
+.TH iswlower 3 2023-07-20 "Linux man-pages 6.05.01"
+.SH NAME
+iswlower \- test for lowercase wide character
+.SH LIBRARY
+Standard C library
+.RI ( libc ", " \-lc )
+.SH SYNOPSIS
+.nf
+.B #include <wctype.h>
+.PP
+.BI "int iswlower(wint_t " wc );
+.fi
+.SH DESCRIPTION
+The
+.BR iswlower ()
+function is the wide-character equivalent of the
+.BR islower (3)
+function.
+It tests whether
+.I wc
+is a wide character
+belonging to the wide-character class "lower".
+.PP
+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".
+.PP
+Being a subclass of the wide-character class "print",
+the wide-character class
+"lower" is disjoint from the wide-character class "cntrl".
+.PP
+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".
+.PP
+Being a subclass of the wide-character class "alnum",
+the wide-character class
+"lower" is disjoint from the wide-character class "punct".
+.PP
+Being a subclass of the wide-character class "alpha",
+the wide-character class
+"lower" is disjoint from the wide-character class "digit".
+.PP
+The wide-character class "lower" contains at least
+those characters
+.I wc
+which are equal to
+.I towlower(wc)
+and different from
+.IR towupper(wc) .
+.PP
+The wide-character class "lower" always contains
+at least the letters \[aq]a\[aq] to \[aq]z\[aq].
+.SH RETURN VALUE
+The
+.BR iswlower ()
+function returns nonzero
+if
+.I wc
+is a wide character
+belonging to the wide-character class "lower".
+Otherwise, it returns zero.
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lbx lb lb
+l l l.
+Interface	Attribute	Value
+T{
+.na
+.nh
+.BR iswlower ()
+T}	Thread safety	MT-Safe locale
+.TE
+.sp 1
+.SH STANDARDS
+C11, POSIX.1-2008.
+.SH HISTORY
+POSIX.1-2001, C99.
+.SH NOTES
+The behavior of
+.BR iswlower ()
+depends on the
+.B LC_CTYPE
+category of the
+current locale.
+.PP
+This function is not very appropriate for dealing with Unicode characters,
+because Unicode knows about three cases: upper, lower, and title case.
+.SH SEE ALSO
+.BR islower (3),
+.BR iswctype (3),
+.BR towlower (3)