1 /* $NetBSD: serial.c,v 1.7 2025/01/26 16:25:38 christos Exp $ */ 2 3 /* 4 * Copyright (C) Internet Systems Consortium, Inc. ("ISC") 5 * 6 * SPDX-License-Identifier: MPL-2.0 7 * 8 * This Source Code Form is subject to the terms of the Mozilla Public 9 * License, v. 2.0. If a copy of the MPL was not distributed with this 10 * file, you can obtain one at https://mozilla.org/MPL/2.0/. 11 * 12 * See the COPYRIGHT file distributed with this work for additional 13 * information regarding copyright ownership. 14 */ 15 16 /*! \file */ 17 18 #include <inttypes.h> 19 #include <stdbool.h> 20 21 #include <isc/serial.h> 22 23 bool 24 isc_serial_lt(uint32_t a, uint32_t b) { 25 /* 26 * Undefined => false 27 */ 28 if (a == (b ^ 0x80000000U)) { 29 return false; 30 } 31 return ((int32_t)(a - b) < 0) ? true : false; 32 } 33 34 bool 35 isc_serial_gt(uint32_t a, uint32_t b) { 36 return ((int32_t)(a - b) > 0) ? true : false; 37 } 38 39 bool 40 isc_serial_le(uint32_t a, uint32_t b) { 41 return (a == b) ? true : isc_serial_lt(a, b); 42 } 43 44 bool 45 isc_serial_ge(uint32_t a, uint32_t b) { 46 return (a == b) ? true : isc_serial_gt(a, b); 47 } 48 49 bool 50 isc_serial_eq(uint32_t a, uint32_t b) { 51 return (a == b) ? true : false; 52 } 53 54 bool 55 isc_serial_ne(uint32_t a, uint32_t b) { 56 return (a != b) ? true : false; 57 } 58