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+.\" $OpenBSD: strcasecmp.3,v 1.10 2007/05/31 19:19:32 jmc Exp $
+.\"
+.\" Copyright (c) 1990, 1991, 1993
+.\"     The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek.
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strcasecmp.3        8.1 (Berkeley) 6/9/93
+.\"
+.Dd $Mdocdate: May 31 2007 $
+.Dt STRCASECMP 3
+.Os
+.Sh NAME
+.Nm strcasecmp ,
+.Nm strncasecmp
+.Nd compare strings, ignoring case
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft int
+.Fn strcasecmp "const char *s1" "const char *s2"
+.Ft int
+.Fn strncasecmp "const char *s1" "const char *s2" "size_t len"
+.Sh DESCRIPTION
+The
+.Fn strcasecmp
+and
+.Fn strncasecmp
+functions compare the NUL-terminated strings
+.Fa s1
+and
+.Fa s2
+and return an integer greater than, equal to, or less than 0,
+according to whether
+.Fa s1
+is lexicographically greater than, equal to, or less than
+.Fa s2
+after translation of each corresponding character to lower-case.
+The strings themselves are not modified.
+The comparison is done using unsigned characters, so that
+.Sq Li \e200
+is greater than
+.Ql \e0 .
+.Pp
+.Fn strncasecmp
+compares at most
+.Fa len
+characters.
+.Sh SEE ALSO
+.Xr bcmp 3 ,
+.Xr memcmp 3 ,
+.Xr strcmp 3 ,
+.Xr strcoll 3 ,
+.Xr strxfrm 3
+.Sh HISTORY
+The
+.Fn strcasecmp
+and
+.Fn strncasecmp
+functions first appeared in
+.Bx 4.4 .