1 /* $NetBSD: serial.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) 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 28 isc_boolean_t 29 isc_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 38 isc_boolean_t 39 isc_serial_gt(isc_uint32_t a, isc_uint32_t b) { 40 return (((isc_int32_t)(a - b) > 0) ? ISC_TRUE : ISC_FALSE); 41 } 42 43 isc_boolean_t 44 isc_serial_le(isc_uint32_t a, isc_uint32_t b) { 45 return ((a == b) ? ISC_TRUE : isc_serial_lt(a, b)); 46 } 47 48 isc_boolean_t 49 isc_serial_ge(isc_uint32_t a, isc_uint32_t b) { 50 return ((a == b) ? ISC_TRUE : isc_serial_gt(a, b)); 51 } 52 53 isc_boolean_t 54 isc_serial_eq(isc_uint32_t a, isc_uint32_t b) { 55 return ((a == b) ? ISC_TRUE : ISC_FALSE); 56 } 57 58 isc_boolean_t 59 isc_serial_ne(isc_uint32_t a, isc_uint32_t b) { 60 return ((a != b) ? ISC_TRUE : ISC_FALSE); 61 } 62