xref: /minix3/external/bsd/bind/dist/lib/isc/region.c (revision 00b67f09dd46474d133c95011a48590a8e8f94c7)

/*	$NetBSD: region.c,v 1.4 2014/12/10 04:37:59 christos Exp $	*/

/*
 * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
 * Copyright (C) 2002  Internet Software Consortium.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

/* Id: region.c,v 1.7 2007/06/19 23:47:17 tbox Exp  */

/*! \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);
}