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/* |
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* This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game. |
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* |
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* Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
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* Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team |
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* Copyright (©) 1992,2007 Frank Tore Johansen |
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* |
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* Crossfire TRT is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by the Free |
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* Software Foundation; either version 2 of the License, or (at your option) |
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* any later version. |
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* |
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* This program is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* for more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51 |
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* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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* |
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* The authors can be reached via e-mail to <crossfire@schmorp.de> |
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*/ |
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|
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#ifndef CRC_H__ |
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#define CRC_H__ |
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|
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#include "traits.h" |
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|
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struct crc32 |
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{ |
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uint32_t crc; |
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|
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crc32 () |
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{ |
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crc = ~uint32_t (0); |
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} |
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|
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void |
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operator ()(const uint8_t byte) |
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{ |
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extern const uint32_t crc_32_tab[256]; |
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crc = crc_32_tab[uint8_t (crc) ^ byte] ^ (crc >> 8); |
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} |
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|
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operator uint32_t () { return crc; } |
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}; |
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|
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#endif |
