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Diff for /libelwix/src/crc_tbl.c between versions 1.1 and 1.2

version 1.1, 2014/01/29 10:23:41 version 1.2, 2014/01/29 14:16:54
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   /*************************************************************************
   * (C) 2014 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
   *  by Michael Pounov <misho@openbsd-bg.org>
   *
   * $Author$
   * $Id$
   *
   **************************************************************************
   The ELWIX and AITNET software is distributed under the following
   terms:
   
   All of the documentation and software included in the ELWIX and AITNET
   Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
   
   Copyright 2004 - 2014
           by Michael Pounov <misho@elwix.org>.  All rights reserved.
   
   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions
   are met:
   1. Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
   2. Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
   3. All advertising materials mentioning features or use of this software
      must display the following acknowledgement:
   This product includes software developed by Michael Pounov <misho@elwix.org>
   ELWIX - Embedded LightWeight unIX and its contributors.
   4. Neither the name of AITNET nor the names of its contributors
      may be used to endorse or promote products derived from this software
      without specific prior written permission.
   
   THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
   ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   SUCH DAMAGE.
   */
   #include "global.h"
   
   
   /* 
    * Table of CRC-32's of all single-byte values
    */
   static const uint32_t crc32_table[256] = {
     0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
     0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
     0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
     0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
     0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
     0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
     0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
     0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
     0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
     0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
     0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
     0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
     0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
     0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
     0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
     0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
     0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
     0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
     0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
     0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
     0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
     0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
     0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
     0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
     0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
     0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
     0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
     0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
     0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
     0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
     0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
     0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
     0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
     0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
     0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
     0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
     0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
     0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
     0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
     0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
     0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
     0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
     0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
     0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
     0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
     0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
     0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
     0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
     0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
     0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
     0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
     0x2d02ef8d
   };
   
   #define DO1(crc, buf)   (crc) = crc32_table[((crc) ^ (*(buf)++)) & 0xff] ^ ((crc) >> 8);
   #define DO2(crc, buf)   DO1(crc, buf); DO1(crc, buf);
   #define DO4(crc, buf)   DO2(crc, buf); DO2(crc, buf);
   #define DO8(crc, buf)   DO4(crc, buf); DO4(crc, buf);
   
   /*
    * crc32() - CRC32 calculation from table
    *
    * @crc = Initial crc value
    * @buf = Data for calculation
    * @len = Length of data
    * return: calculated CRC32
    */
   uint32_t
   crc32(uint32_t crc, const uint8_t * __restrict buf, uint32_t len)
   {
           crc = crc ^ 0xffffffff;
           while (len >= 8) {
                   DO8(crc, buf);
                   len -= 8;
           }
           if (len)
                   do {
                           DO1(crc, buf);
                   } while (--len);
           return crc ^ 0xffffffff;
   }
Removed from v.1.1  
changed lines
  Added in v.1.2

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