2 * The copyright in this software is being made available under the 2-clauses
3 * BSD License, included below. This software may be subject to other third
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7 * Copyright (c) 2001-2003, David Janssens
8 * Copyright (c) 2002-2003, Yannick Verschueren
9 * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
10 * Copyright (c) 2005, Herve Drolon, FreeImage Team
11 * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
12 * Copyright (c) 2005-2006, Dept. of Electronic and Information Engineering, Universita' degli Studi di Perugia, Italy
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41 @brief Functions used to compute the 16- and 32-bit CRC of byte arrays
45 #ifndef __CRC16_HEADER__
46 #define __CRC16_HEADER__
50 * CRC - Cyclic Redundancy Check (16-bit)
52 * A CRC-checksum is used to be sure, the data hasn't changed or is false.
53 * To create a CRC-checksum, initialise a check-variable (unsigned short),
54 * and set this to zero. Than call for every byte in the file (e.g.) the
55 * procedure updateCRC16 with this check-variable as the first parameter,
56 * and the byte as the second. At the end, the check-variable contains the
59 * implemented by Michael Neumann, 14.06.1998
62 void updateCRC16(unsigned short *, unsigned char);
64 #endif /* __CRC16_HEADER__ */
67 #ifndef __CRC32_HEADER__
68 #define __CRC32_HEADER__
72 * CRC - Cyclic Redundancy Check (32-bit)
74 * A CRC-checksum is used to be sure, the data hasn't changed or is false.
75 * To create a CRC-checksum, initialise a check-variable (unsigned short),
76 * and set this to zero. Than call for every byte in the file (e.g.) the
77 * procedure updateCRC32 with this check-variable as the first parameter,
78 * and the byte as the second. At the end, the check-variable contains the
81 * implemented by Michael Neumann, 14.06.1998
84 void updateCRC32(unsigned long *, unsigned char);
86 #endif /* __CRC32_HEADER__ */