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5b2abdfb 1.\" Copyright (c) 1989, 1991, 1993
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2.\" The Regents of the University of California. All rights reserved.
3.\"
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4.\" This code is derived from software contributed to Berkeley by
5.\" the American National Standards Committee X3, on Information
6.\" Processing Systems.
7.\"
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8.\" Redistribution and use in source and binary forms, with or without
9.\" modification, are permitted provided that the following conditions
10.\" are met:
11.\" 1. Redistributions of source code must retain the above copyright
12.\" notice, this list of conditions and the following disclaimer.
13.\" 2. Redistributions in binary form must reproduce the above copyright
14.\" notice, this list of conditions and the following disclaimer in the
15.\" documentation and/or other materials provided with the distribution.
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16.\" 4. Neither the name of the University nor the names of its contributors
17.\" may be used to endorse or promote products derived from this software
18.\" without specific prior written permission.
19.\"
20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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5b2abdfb 32.\" @(#)tolower.3 8.1 (Berkeley) 6/4/93
1f2f436a 33.\" $FreeBSD: src/lib/libc/locale/towlower.3,v 1.6 2007/01/09 00:28:01 imp Exp $
e9ce8d39 34.\"
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35.Dd October 3, 2002
36.Dt TOWLOWER 3
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37.Os
38.Sh NAME
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39.Nm towlower ,
40.Nm towlower_l
9385eb3d 41.Nd "upper case to lower case letter conversion (wide character version)"
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42.Sh LIBRARY
43.Lb libc
44.Sh SYNOPSIS
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45.In wctype.h
46.Ft wint_t
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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
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57.Sh DESCRIPTION
58The
9385eb3d 59.Fn towlower
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60function converts an upper-case letter to the corresponding lower-case
61letter.
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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.
e9ce8d39 70.Sh RETURN VALUES
5b2abdfb 71If the argument is an upper-case letter, the
9385eb3d 72.Fn towlower
5b2abdfb 73function returns the corresponding lower-case letter if there is
ad3c9f2a 74one; otherwise, the argument is returned unchanged.
e9ce8d39 75.Sh SEE ALSO
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76.Xr iswlower 3 ,
77.Xr tolower 3 ,
78.Xr towupper 3 ,
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79.Xr wctrans 3 ,
80.Xr xlocale 3
5b2abdfb 81.Sh STANDARDS
e9ce8d39 82The
9385eb3d 83.Fn towlower
5b2abdfb 84function conforms to
9385eb3d 85.St -isoC-99 .