1135446Strhodes/*
2193149Sdougb * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
3135446Strhodes * Copyright (C) 2002  Internet Software Consortium.
4135446Strhodes *
5193149Sdougb * Permission to use, copy, modify, and/or distribute this software for any
6135446Strhodes * purpose with or without fee is hereby granted, provided that the above
7135446Strhodes * copyright notice and this permission notice appear in all copies.
8135446Strhodes *
9135446Strhodes * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10135446Strhodes * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11135446Strhodes * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12135446Strhodes * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13135446Strhodes * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14135446Strhodes * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15135446Strhodes * PERFORMANCE OF THIS SOFTWARE.
16135446Strhodes */
17135446Strhodes
18234010Sdougb/* $Id: region.c,v 1.7 2007/06/19 23:47:17 tbox Exp $ */
19135446Strhodes
20170222Sdougb/*! \file */
21170222Sdougb
22135446Strhodes#include <config.h>
23135446Strhodes
24135446Strhodes#include <stdlib.h>
25135446Strhodes#include <string.h>
26135446Strhodes
27135446Strhodes#include <isc/region.h>
28135446Strhodes#include <isc/util.h>
29135446Strhodes
30135446Strhodesint
31135446Strhodesisc_region_compare(isc_region_t *r1, isc_region_t *r2) {
32135446Strhodes	unsigned int l;
33135446Strhodes	int result;
34135446Strhodes
35135446Strhodes	REQUIRE(r1 != NULL);
36135446Strhodes	REQUIRE(r2 != NULL);
37135446Strhodes
38135446Strhodes	l = (r1->length < r2->length) ? r1->length : r2->length;
39135446Strhodes
40135446Strhodes	if ((result = memcmp(r1->base, r2->base, l)) != 0)
41135446Strhodes		return ((result < 0) ? -1 : 1);
42135446Strhodes	else
43135446Strhodes		return ((r1->length == r2->length) ? 0 :
44135446Strhodes			(r1->length < r2->length) ? -1 : 1);
45135446Strhodes}
46