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authorJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:54:44 -0400
committerJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:54:44 -0400
commita9157ce950dfe2fc30795d43b9d79b9d1bffc48b (patch)
tree9df484304b560466d145e662c1c254ff0e9ae0ba /static/openbsd/man3/strcasecmp.3
parent160aa82b2d39c46ad33723d7d909cb4972efbb03 (diff)
docs: Added All OpenBSD Manuals
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+.\" $OpenBSD: strcasecmp.3,v 1.14 2017/09/05 03:16:13 schwarze Exp $
+.\"
+.\" Copyright (c) 1990, 1991, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\" Copyright (c) 2017 Ingo Schwarze <schwarze@openbsd.org>
+.\"
+.\" 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: September 5 2017 $
+.Dt STRCASECMP 3
+.Os
+.Sh NAME
+.Nm strcasecmp ,
+.Nm strcasecmp_l ,
+.Nm strncasecmp ,
+.Nm strncasecmp_l
+.Nd compare strings, ignoring case
+.Sh SYNOPSIS
+.In strings.h
+.Ft int
+.Fo strcasecmp
+.Fa "const char *s1"
+.Fa "const char *s2"
+.Fc
+.Ft int
+.Fo strcasecmp_l
+.Fa "const char *s1"
+.Fa "const char *s2"
+.Fa "locale_t locale"
+.Fc
+.Ft int
+.Fo strncasecmp
+.Fa "const char *s1"
+.Fa "const char *s2"
+.Fa "size_t len"
+.Fc
+.Ft int
+.Fo strncasecmp_l
+.Fa "const char *s1"
+.Fa "const char *s2"
+.Fa "size_t len"
+.Fa "locale_t locale"
+.Fc
+.Sh DESCRIPTION
+These 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
+and
+.Fn strncasecmp_l
+compare at most
+.Fa len
+characters.
+.Pp
+On
+.Ox ,
+these functions always use the C locale and ignore
+the global locale, the thread-specific locale, and the
+.Fa locale
+argument.
+.Sh ENVIRONMENT
+On other operating systems, the behaviour of
+.Fn strcasecmp
+and
+.Fn strncasecmp
+may depend on the
+.Dv LC_CTYPE
+.Xr locale 1 .
+.Sh SEE ALSO
+.Xr strcmp 3 ,
+.Xr strcoll 3 ,
+.Xr strxfrm 3 ,
+.Xr wcscasecmp 3
+.Sh STANDARDS
+These functions conform to
+.St -p1003.1-2008 .
+.Sh HISTORY
+The
+.Fn strcasecmp
+and
+.Fn strncasecmp
+functions have been available since
+.Bx 4.3 Tahoe ,
+and
+.Fn strcasecmp_l
+and
+.Fn strncasecmp_l
+since
+.Ox 6.2 .