1/* $NetBSD: bswap.c,v 1.2 2017/01/28 21:31:50 christos Exp $ */ 2 3/* 4 * Copyright (c) 2001 Kungliga Tekniska H��gskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36#include <config.h> 37#include <krb5/roken.h> 38 39#ifndef HAVE_BSWAP64 40 41ROKEN_LIB_FUNCTION uint64_t ROKEN_LIB_CALL 42bswap64 (uint64_t val) 43{ 44 return 45 (val & 0xffULL) << 56 | 46 (val & 0xff00ULL) << 40 | 47 (val & 0xff0000ULL) << 24 | 48 (val & 0xff000000ULL) << 8 | 49 (val & 0xff00000000ULL) >> 8 | 50 (val & 0xff0000000000ULL) >> 24 | 51 (val & 0xff000000000000ULL) >> 40 | 52 (val & 0xff00000000000000ULL) >> 56 ; 53} 54#endif 55 56#ifndef HAVE_BSWAP32 57 58ROKEN_LIB_FUNCTION unsigned int ROKEN_LIB_CALL 59bswap32 (unsigned int val) 60{ 61 return (val & 0xff) << 24 | 62 (val & 0xff00) << 8 | 63 (val & 0xff0000) >> 8 | 64 (val & 0xff000000) >> 24; 65} 66#endif 67 68#ifndef HAVE_BSWAP16 69 70ROKEN_LIB_FUNCTION unsigned short ROKEN_LIB_CALL 71bswap16 (unsigned short val) 72{ 73 return (val & 0xff) << 8 | 74 (val & 0xff00) >> 8; 75} 76#endif 77