/*	$NetBSD: region.c,v 1.2 2018/08/12 13:02:37 christos Exp $	*/

/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */


/*! \file */

#include <config.h>

#include <stdlib.h>
#include <string.h>

#include <isc/region.h>
#include <isc/util.h>

int
isc_region_compare(isc_region_t *r1, isc_region_t *r2) {
	unsigned int l;
	int result;

	REQUIRE(r1 != NULL);
	REQUIRE(r2 != NULL);

	l = (r1->length < r2->length) ? r1->length : r2->length;

	if ((result = memcmp(r1->base, r2->base, l)) != 0)
		return ((result < 0) ? -1 : 1);
	else
		return ((r1->length == r2->length) ? 0 :
			(r1->length < r2->length) ? -1 : 1);
}