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1.\" Copyright (c) 1989, 1991, 1993
2.\" The Regents of the University of California. All rights reserved.
3.\"
4.\" This code is derived from software contributed to Berkeley by
5.\" the American National Standards Committee X3, on Information
6.\" Processing Systems.
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31.\"
32.\" @(#)tolower.3 8.1 (Berkeley) 6/4/93
33.\" $FreeBSD: src/lib/libc/locale/towlower.3,v 1.6 2007/01/09 00:28:01 imp Exp $
34.\"
35.Dd October 3, 2002
36.Dt TOWLOWER 3
37.Os
38.Sh NAME
39.Nm towlower ,
40.Nm towlower_l
41.Nd "upper case to lower case letter conversion (wide character version)"
42.Sh LIBRARY
43.Lb libc
44.Sh SYNOPSIS
45.In wctype.h
46.Ft wint_t
47.Fo towlower
48.Fa "wint_t wc"
49.Fc
50.In wctype.h
51.In xlocale.h
52.Ft wint_t
53.Fo towlower_l
54.Fa "wint_t wc"
55.Fa "locale_t loc"
56.Fc
57.Sh DESCRIPTION
58The
59.Fn towlower
60function converts an upper-case letter to the corresponding lower-case
61letter.
62.Pp
63Although the
64.Fn towlower
65function uses the current locale, the
66.Fn towlower_l
67function may be passed a locale directly. See
68.Xr xlocale 3
69for more information.
70.Sh RETURN VALUES
71If the argument is an upper-case letter, the
72.Fn towlower
73function returns the corresponding lower-case letter if there is
74one; otherwise, the argument is returned unchanged.
75.Sh SEE ALSO
76.Xr iswlower 3 ,
77.Xr tolower 3 ,
78.Xr towupper 3 ,
79.Xr wctrans 3 ,
80.Xr xlocale 3
81.Sh STANDARDS
82The
83.Fn towlower
84function conforms to
85.St -isoC-99 .