BinUtils.cpp

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//==============================================================================
//
//  This file is part of GNSSTk, the ARL:UT GNSS Toolkit.
//
//  The GNSSTk is free software; you can redistribute it and/or modify
//  it under the terms of the GNU Lesser General Public License as published
//  by the Free Software Foundation; either version 3.0 of the License, or
//  any later version.
//
//  The GNSSTk is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with GNSSTk; if not, write to the Free Software Foundation,
//  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
//
//  This software was developed by Applied Research Laboratories at the
//  University of Texas at Austin.
//  Copyright 2004-2022, The Board of Regents of The University of Texas System
//
//==============================================================================
 
//==============================================================================
//
//  This software was developed by Applied Research Laboratories at the
//  University of Texas at Austin, under contract to an agency or agencies
//  within the U.S. Department of Defense. The U.S. Government retains all
//  rights to use, duplicate, distribute, disclose, or release this software.
//
//  Pursuant to DoD Directive 523024
//
//  DISTRIBUTION STATEMENT A: This software has been approved for public
//                            release, distribution is unlimited.
//
//==============================================================================
 
#include "BinUtils.hpp"
 
namespace gnsstk
{
   namespace BinUtils
   {
      CRCParam :: CRCParam(int o, unsigned long p, unsigned long i,
                           unsigned long f, bool d, bool ri, bool ro)
            : order(o), polynom(p), initial(i), final(f), direct(d),
              refin(ri), refout(ro)
      {
      }
 
 
      const CRCParam CRCCCITT(16, 0x1021, 0xffff, 0, true, false, false);
      const CRCParam CRC16(16, 0x8005, 0, 0, true, true, true);
      const CRCParam CRC32(32, 0x4c11db7, 0xffffffff, 0xffffffff, true, true, true);
      const CRCParam CRC24Q(24, 0x823ba9, 0, 0xffffff, true, false, false);
      const CRCParam CRCGLOL3(24, 0xc3267d, 0, 0xffffff, true, false, false);
      // CRC24Q (for GPS CNAV): 23 17 13 12 11 9 8 7 5 3 +1
      // 1000 0010 0011 1011 1010 1001 : 823ba9
 
      // CRC-16: 16 15 2 +1
      // 1000 0000 0000 0101: 8005
 
      // CRC-CCITT: 16 12 5 +1
      // 0001 0000 0010 0001: 1021
 
      // CRC-32: 32 26 23 22 16 12 11 10 8 7 5 4 2 +1
      // 0000 0100 1100 0001 0001 1101 1011 0101 : 04c11db5
 
      // GLONASS L3: 24 23 18 17 14 11 10 7 6 5 4 3 1 +1
      // 1100 0011 0010 0110 0111 1101: c3267d
   }
}