1/* $NetBSD$ */ 2 3/* 4 * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC") 5 * Copyright (C) 1999-2001 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: serial.c,v 1.12 2007/06/19 23:47:17 tbox Exp */ 21 22/*! \file */ 23 24#include <config.h> 25 26#include <isc/serial.h> 27 28isc_boolean_t 29isc_serial_lt(isc_uint32_t a, isc_uint32_t b) { 30 /* 31 * Undefined => ISC_FALSE 32 */ 33 if (a == (b ^ 0x80000000U)) 34 return (ISC_FALSE); 35 return (((isc_int32_t)(a - b) < 0) ? ISC_TRUE : ISC_FALSE); 36} 37 38isc_boolean_t 39isc_serial_gt(isc_uint32_t a, isc_uint32_t b) { 40 return (((isc_int32_t)(a - b) > 0) ? ISC_TRUE : ISC_FALSE); 41} 42 43isc_boolean_t 44isc_serial_le(isc_uint32_t a, isc_uint32_t b) { 45 return ((a == b) ? ISC_TRUE : isc_serial_lt(a, b)); 46} 47 48isc_boolean_t 49isc_serial_ge(isc_uint32_t a, isc_uint32_t b) { 50 return ((a == b) ? ISC_TRUE : isc_serial_gt(a, b)); 51} 52 53isc_boolean_t 54isc_serial_eq(isc_uint32_t a, isc_uint32_t b) { 55 return ((a == b) ? ISC_TRUE : ISC_FALSE); 56} 57 58isc_boolean_t 59isc_serial_ne(isc_uint32_t a, isc_uint32_t b) { 60 return ((a != b) ? ISC_TRUE : ISC_FALSE); 61} 62