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.\" 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 and the American National Standards Committee X3,
.\" on Information Processing Systems.
.\"
.\" 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.
.\"
.\"     from: @(#)strcmp.3	8.1 (Berkeley) 6/4/93
.\"	$NetBSD: strcmp.3,v 1.14 2016/07/14 17:09:03 abhinav Exp $
.\"
.Dd June 4, 1993
.Dt STRCMP 3
.Os
.Sh NAME
.Nm strcmp ,
.Nm strncmp
.Nd compare strings
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In string.h
.Ft int
.Fn strcmp "const char *s1" "const char *s2"
.Ft int
.Fn strncmp "const char *s1" "const char *s2" "size_t len"
.Sh DESCRIPTION
The
.Fn strcmp
and
.Fn strncmp
functions
lexicographically compare the nul-terminated strings
.Fa s1
and
.Fa s2 .
.Sh RETURN VALUES
The
.Fn strcmp
and
.Fn strncmp
functions return an integer greater than, equal to, or less than 0, according
to whether the string
.Fa s1
is greater than, equal to, or less than the string
.Fa s2 .
The comparison is done using unsigned characters, so that
.Ql \e200
is greater than
.Ql \e0 .
.Pp
The
.Fn strncmp
function compares not more than
.Fa len
characters.
.Sh SEE ALSO
.Xr bcmp 3 ,
.Xr memcmp 3 ,
.Xr strcasecmp 3 ,
.Xr strcoll 3 ,
.Xr strxfrm 3
.Sh STANDARDS
The
.Fn strcmp
and
.Fn strncmp
functions
conform to
.St -ansiC .
.Sh NOTES
If
.Fa len
is 0,
.Fn strncmp
always returns 0.
a4'>nuke trailing whitespaceperry 2003-06-29Back out the lwp/ktrace changes. They contained a lot of colateral damage,fvdl 2003-06-28Pass lwp pointers throughtout the kernel, as required, so that the lwpid candarrenr 2003-02-10Fix clockctlattach to take an (ignored) int as its parameter, which isperry 2002-10-23merge kqueue branch into -currentjdolecek 2002-09-23Remove breaks after returns, unreachable returns and returns aftersimonb 2002-09-06Merge the gehenna-devsw branch into the trunk.gehenna 2002-03-01Two more trivial bug fixes:manu 2002-02-25Fixes a bug in argument passing to ntp_adjtime1. patch submitted bymanu 2001-12-09Changed clocktl interface to use syscallargs structuresmanu 2001-11-15don't need <sys/types.h> when including <sys/param.h>lukem 2001-11-13add RCSIDslukem 2001-09-16This is the clockctl pseudodevice. It gives non root users access to root-onlymanu