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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. All advertising materials mentioning features or use of this software
+.\" must display the following acknowledgement:
+.\" This product includes software developed by the University of
+.\" California, Berkeley and its contributors.
+.\" 4. 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.
+.\"
+.\" @(#)strcmp.3 8.1 (Berkeley) 6/4/93
+.\" %FreeBSD: src/lib/libc/string/strcmp.3,v 1.6.2.3 2001/10/15 16:45:38 mike Exp %
+.\"
+.\" $FreeBSD$
+.\"
+.Dd October 11, 2001
+.Dt STRCMP 3
+.Os
+.Sh 名称
+.Nm strcmp ,
+.Nm strncmp ,
+.Nd 文字列の比較
+.Sh ライブラリ
+.Lb libc
+.Sh 書式
+.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 解説
+.Fn strcmp
+および
+.Fn strncmp
+関数は、ヌル文字で終了する文字列
+.Fa s1
+および
+.Fa s2
+を辞書式順序で比較します。
+.Pp
+.Fn strncmp
+関数は、
+.Fa len
+文字分の比較をします。
+.Fn strncmp
+は、バイナリデータより
+文字列の比較のために設計されているので、
+.Ql \e0
+文字の後に現れる文字列は比較されません。
+.Sh 戻り値
+.Fn strcmp
+および
+.Fn strncmp
+は、
+.Fa s1
+が
+.Fa s2
+よりも大きいか、等しいか、あるいは小さいかに応じて、
+それぞれ 0 よりも大きい、0 に等しい、
+あるいは 0 よりも小さい整数を返します。比較は、
+.Ql \e200
+が
+.Ql \e0
+よりも大きくなるように、unsigned char を使って行います。
+.Sh 関連項目
+.Xr bcmp 3 ,
+.Xr memcmp 3 ,
+.Xr strcasecmp 3 ,
+.Xr strcoll 3 ,
+.Xr strxfrm 3
+.Sh 規格
+.Fn strcmp
+および
+.Fn strncmp
+関数は、
+.St -isoC
+に適合しています。