tolower.3 (dab055db89eaf7d442acc29140d64292169b45a8) tolower.3 (9981ef2702b1f3f392f1059ce4c97314db3afdff)
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.
7.\"
8.\" Redistribution and use in source and binary forms, with or without

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31.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34.\" SUCH DAMAGE.
35.\"
36.\" @(#)tolower.3 8.1 (Berkeley) 6/4/93
37.\" $FreeBSD$
38.\"
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.
7.\"
8.\" Redistribution and use in source and binary forms, with or without

--- 22 unchanged lines hidden (view full) ---

31.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34.\" SUCH DAMAGE.
35.\"
36.\" @(#)tolower.3 8.1 (Berkeley) 6/4/93
37.\" $FreeBSD$
38.\"
39.Dd June 4, 1993
39.Dd October 3, 2002
40.Dt TOLOWER 3
41.Os
42.Sh NAME
43.Nm tolower
44.Nd upper case to lower case letter conversion
45.Sh LIBRARY
46.Lb libc
47.Sh SYNOPSIS

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62.Li unsigned char
63or the value of
64.Dv EOF .
65.Sh RETURN VALUES
66If the argument is an upper-case letter, the
67.Fn tolower
68function returns the corresponding lower-case letter if there is
69one; otherwise the argument is returned unchanged.
40.Dt TOLOWER 3
41.Os
42.Sh NAME
43.Nm tolower
44.Nd upper case to lower case letter conversion
45.Sh LIBRARY
46.Lb libc
47.Sh SYNOPSIS

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62.Li unsigned char
63or the value of
64.Dv EOF .
65.Sh RETURN VALUES
66If the argument is an upper-case letter, the
67.Fn tolower
68function returns the corresponding lower-case letter if there is
69one; otherwise the argument is returned unchanged.
70.Sh COMPATIBILITY
71Although
72.Fn tolower
73accepts arguments outside of the range of the
74.Vt "unsigned char"
75type in locales with large character sets,
76this is a
77.Bx 4.4
78extension and the
79.Fn towlower
80function should be used instead for maximum portability.
70.Sh SEE ALSO
71.Xr ctype 3 ,
72.Xr islower 3 ,
81.Sh SEE ALSO
82.Xr ctype 3 ,
83.Xr islower 3 ,
73.Xr multibyte 3
84.Xr multibyte 3 ,
85.Xr towlower 3
74.Sh STANDARDS
75The
76.Fn tolower
77function conforms to
78.St -isoC .
86.Sh STANDARDS
87The
88.Fn tolower
89function conforms to
90.St -isoC .