region.c revision 1.1 
1/*	$NetBSD: region.c,v 1.1 2018/08/12 12:08:23 christos Exp $	*/
2
3/*
4 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
5 *
6 * This Source Code Form is subject to the terms of the Mozilla Public
7 * License, v. 2.0. If a copy of the MPL was not distributed with this
8 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
9 *
10 * See the COPYRIGHT file distributed with this work for additional
11 * information regarding copyright ownership.
12 */
13
14
15/*! \file */
16
17#include <config.h>
18
19#include <stdlib.h>
20#include <string.h>
21
22#include <isc/region.h>
23#include <isc/util.h>
24
25int
26isc_region_compare(isc_region_t *r1, isc_region_t *r2) {
27	unsigned int l;
28	int result;
29
30	REQUIRE(r1 != NULL);
31	REQUIRE(r2 != NULL);
32
33	l = (r1->length < r2->length) ? r1->length : r2->length;
34
35	if ((result = memcmp(r1->base, r2->base, l)) != 0)
36		return ((result < 0) ? -1 : 1);
37	else
38		return ((r1->length == r2->length) ? 0 :
39			(r1->length < r2->length) ? -1 : 1);
40}
41