1/*	$NetBSD: region.c,v 1.6 2020/05/25 20:47:20 christos Exp $	*/
2
3/*
4 * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
5 * Copyright (C) 2002  Internet Software Consortium.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17 * PERFORMANCE OF THIS SOFTWARE.
18 */
19
20/* Id: region.c,v 1.7 2007/06/19 23:47:17 tbox Exp  */
21
22/*! \file */
23
24#include <config.h>
25
26#include <stdlib.h>
27#include <string.h>
28
29#include <isc/region.h>
30#include <isc/util.h>
31
32int
33isc_region_compare(isc_region_t *r1, isc_region_t *r2) {
34	unsigned int l;
35	int result;
36
37	REQUIRE(r1 != NULL);
38	REQUIRE(r2 != NULL);
39
40	l = (r1->length < r2->length) ? r1->length : r2->length;
41
42	if ((result = memcmp(r1->base, r2->base, l)) != 0)
43		return ((result < 0) ? -1 : 1);
44	else
45		return ((r1->length == r2->length) ? 0 :
46			(r1->length < r2->length) ? -1 : 1);
47}
48