bswap.c revision 302408
1153838Sdfr/* 2153838Sdfr * Copyright (c) 2001 Kungliga Tekniska H��gskolan 3153838Sdfr * (Royal Institute of Technology, Stockholm, Sweden). 4153838Sdfr * All rights reserved. 5153838Sdfr * 6153838Sdfr * Redistribution and use in source and binary forms, with or without 7153838Sdfr * modification, are permitted provided that the following conditions 8153838Sdfr * are met: 9153838Sdfr * 10153838Sdfr * 1. Redistributions of source code must retain the above copyright 11153838Sdfr * notice, this list of conditions and the following disclaimer. 12153838Sdfr * 13153838Sdfr * 2. Redistributions in binary form must reproduce the above copyright 14153838Sdfr * notice, this list of conditions and the following disclaimer in the 15153838Sdfr * documentation and/or other materials provided with the distribution. 16153838Sdfr * 17153838Sdfr * 3. Neither the name of the Institute nor the names of its contributors 18153838Sdfr * may be used to endorse or promote products derived from this software 19153838Sdfr * without specific prior written permission. 20153838Sdfr * 21153838Sdfr * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22153838Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23153838Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24153838Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25153838Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26153838Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27153838Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28153838Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29153838Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30153838Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31153838Sdfr * SUCH DAMAGE. 32153838Sdfr */ 33153838Sdfr 34153838Sdfr#include <config.h> 35153838Sdfr#include "roken.h" 36153838Sdfr 37153838Sdfr#ifndef HAVE_BSWAP32 38153838Sdfr 39153838SdfrROKEN_LIB_FUNCTION unsigned int ROKEN_LIB_CALL 40178828Sdfrbswap32 (unsigned int val) 41153838Sdfr{ 42153838Sdfr return (val & 0xff) << 24 | 43153838Sdfr (val & 0xff00) << 8 | 44153838Sdfr (val & 0xff0000) >> 8 | 45153838Sdfr (val & 0xff000000) >> 24; 46153838Sdfr} 47153838Sdfr#endif 48153838Sdfr 49171112Sdfr#ifndef HAVE_BSWAP16 50171112Sdfr 51171112SdfrROKEN_LIB_FUNCTION unsigned short ROKEN_LIB_CALL 52171112Sdfrbswap16 (unsigned short val) 53178828Sdfr{ 54178828Sdfr return (val & 0xff) << 8 | 55178828Sdfr (val & 0xff00) >> 8; 56178828Sdfr} 57178828Sdfr#endif 58178828Sdfr