85 lines
3.1 KiB
C
85 lines
3.1 KiB
C
/*
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* Copyright (c) 2001-2003, David Janssens
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* Copyright (c) 2002-2003, Yannick Verschueren
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* Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
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* Copyright (c) 2005, Herve Drolon, FreeImage Team
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* Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
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* Copyright (c) 2005-2006, Dept. of Electronic and Information Engineering, Universita' degli Studi di Perugia, Italy
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef USE_JPWL
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/**
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@file crc.h
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@brief Functions used to compute the 16- and 32-bit CRC of byte arrays
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*/
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#ifndef __CRC16_HEADER__
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#define __CRC16_HEADER__
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/** file: CRC16.HPP
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*
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* CRC - Cyclic Redundancy Check (16-bit)
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*
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* A CRC-checksum is used to be sure, the data hasn't changed or is false.
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* To create a CRC-checksum, initialise a check-variable (unsigned short),
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* and set this to zero. Than call for every byte in the file (e.g.) the
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* procedure updateCRC16 with this check-variable as the first parameter,
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* and the byte as the second. At the end, the check-variable contains the
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* CRC-checksum.
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*
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* implemented by Michael Neumann, 14.06.1998
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*
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*/
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void updateCRC16(unsigned short *, unsigned char);
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#endif /* __CRC16_HEADER__ */
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#ifndef __CRC32_HEADER__
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#define __CRC32_HEADER__
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/** file: CRC32.HPP
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*
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* CRC - Cyclic Redundancy Check (32-bit)
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*
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* A CRC-checksum is used to be sure, the data hasn't changed or is false.
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* To create a CRC-checksum, initialise a check-variable (unsigned short),
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* and set this to zero. Than call for every byte in the file (e.g.) the
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* procedure updateCRC32 with this check-variable as the first parameter,
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* and the byte as the second. At the end, the check-variable contains the
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* CRC-checksum.
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*
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* implemented by Michael Neumann, 14.06.1998
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*
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*/
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void updateCRC32(unsigned long *, unsigned char);
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#endif /* __CRC32_HEADER__ */
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#endif /* USE_JPWL */
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