1 /* $NetBSD: region.c,v 1.4 2014/12/10 04:37:59 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 32 int 33 isc_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