158f0484fSRodney W. Grimes.\" Copyright (c) 1989, 1991, 1993 258f0484fSRodney W. Grimes.\" The Regents of the University of California. All rights reserved. 358f0484fSRodney W. Grimes.\" 458f0484fSRodney W. Grimes.\" This code is derived from software contributed to Berkeley by 558f0484fSRodney W. Grimes.\" the American National Standards Committee X3, on Information 658f0484fSRodney W. Grimes.\" Processing Systems. 758f0484fSRodney W. Grimes.\" 858f0484fSRodney W. Grimes.\" Redistribution and use in source and binary forms, with or without 958f0484fSRodney W. Grimes.\" modification, are permitted provided that the following conditions 1058f0484fSRodney W. Grimes.\" are met: 1158f0484fSRodney W. Grimes.\" 1. Redistributions of source code must retain the above copyright 1258f0484fSRodney W. Grimes.\" notice, this list of conditions and the following disclaimer. 1358f0484fSRodney W. Grimes.\" 2. Redistributions in binary form must reproduce the above copyright 1458f0484fSRodney W. Grimes.\" notice, this list of conditions and the following disclaimer in the 1558f0484fSRodney W. Grimes.\" documentation and/or other materials provided with the distribution. 1658f0484fSRodney W. Grimes.\" 3. All advertising materials mentioning features or use of this software 1758f0484fSRodney W. Grimes.\" must display the following acknowledgement: 1858f0484fSRodney W. Grimes.\" This product includes software developed by the University of 1958f0484fSRodney W. Grimes.\" California, Berkeley and its contributors. 2058f0484fSRodney W. Grimes.\" 4. Neither the name of the University nor the names of its contributors 2158f0484fSRodney W. Grimes.\" may be used to endorse or promote products derived from this software 2258f0484fSRodney W. Grimes.\" without specific prior written permission. 2358f0484fSRodney W. Grimes.\" 2458f0484fSRodney W. Grimes.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2558f0484fSRodney W. Grimes.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2658f0484fSRodney W. Grimes.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2758f0484fSRodney W. Grimes.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2858f0484fSRodney W. Grimes.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2958f0484fSRodney W. Grimes.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 3058f0484fSRodney W. Grimes.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3158f0484fSRodney W. Grimes.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3258f0484fSRodney W. Grimes.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3358f0484fSRodney W. Grimes.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3458f0484fSRodney W. Grimes.\" SUCH DAMAGE. 3558f0484fSRodney W. Grimes.\" 3658f0484fSRodney W. Grimes.\" @(#)tolower.3 8.1 (Berkeley) 6/4/93 3758f0484fSRodney W. Grimes.\" 3858f0484fSRodney W. Grimes.Dd June 4, 1993 3958f0484fSRodney W. Grimes.Dt TOLOWER 3 4058f0484fSRodney W. Grimes.Os 4158f0484fSRodney W. Grimes.Sh NAME 4258f0484fSRodney W. Grimes.Nm tolower 4358f0484fSRodney W. Grimes.Nd upper case to lower case letter conversion 4458f0484fSRodney W. Grimes.Sh SYNOPSIS 4558f0484fSRodney W. Grimes.Fd #include <ctype.h> 4658f0484fSRodney W. Grimes.Ft int 4758f0484fSRodney W. Grimes.Fn tolower "int c" 4858f0484fSRodney W. Grimes.Sh DESCRIPTION 4958f0484fSRodney W. GrimesThe 5058f0484fSRodney W. Grimes.Fn tolower 5158f0484fSRodney W. Grimesfunction converts an upper-case letter to the corresponding lower-case 5258f0484fSRodney W. Grimesletter. 5358f0484fSRodney W. Grimes.Sh RETURN VALUES 5458f0484fSRodney W. GrimesIf the argument is an upper-case letter, the 5558f0484fSRodney W. Grimes.Fn tolower 5658f0484fSRodney W. Grimesfunction returns the corresponding lower-case letter if there is 5758f0484fSRodney W. Grimesone; otherwise the argument is returned unchanged. 5858f0484fSRodney W. Grimes.\" In the 5958f0484fSRodney W. Grimes.\" .Em ``C'' 6058f0484fSRodney W. Grimes.\" locale, 6158f0484fSRodney W. Grimes.\" .Fn tolower 6258f0484fSRodney W. Grimes.\" maps only the characters for which 6358f0484fSRodney W. Grimes.\" .Xr isupper 6458f0484fSRodney W. Grimes.\" is true to the corresponding characters for which 6558f0484fSRodney W. Grimes.\" .Xr islower 6658f0484fSRodney W. Grimes.\" is true. 6758f0484fSRodney W. Grimes.Sh SEE ALSO 6858f0484fSRodney W. Grimes.Xr isascii 3 , 6958f0484fSRodney W. Grimes.Xr isalnum 3 , 7058f0484fSRodney W. Grimes.Xr isalpha 3 , 7158f0484fSRodney W. Grimes.Xr iscntrl 3 , 7258f0484fSRodney W. Grimes.Xr isdigit 3 , 7358f0484fSRodney W. Grimes.Xr isgraph 3 , 7458f0484fSRodney W. Grimes.Xr islower 3 , 7558f0484fSRodney W. Grimes.Xr isprint 3 , 7658f0484fSRodney W. Grimes.Xr ispunct 3 , 7758f0484fSRodney W. Grimes.Xr isspace 3 , 7858f0484fSRodney W. Grimes.Xr isupper 3 , 7958f0484fSRodney W. Grimes.Xr isxdigit 3 , 8058f0484fSRodney W. Grimes.Xr toascii 3 , 81b3d64ab7SGary Palmer.Xr toupper 3 , 82d28b4295SGary Palmer.Xr stdio 3 , 8358f0484fSRodney W. Grimes.Xr ascii 7 8458f0484fSRodney W. Grimes.Sh STANDARDS 8558f0484fSRodney W. GrimesThe 86b3d64ab7SGary Palmer.Fn tolower 8758f0484fSRodney W. Grimesfunction conforms to 8858f0484fSRodney W. Grimes.St -ansiC . 89