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/* |
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* This file is part of Deliantra, the Roguelike Realtime MMORPG. |
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* |
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* Copyright (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team |
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* Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
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* |
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* Deliantra is free software: you can redistribute it and/or modify it under |
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* the terms of the Affero GNU General Public License as published by the |
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* Free Software Foundation, either version 3 of the License, or (at your |
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* option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the Affero GNU General Public License |
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* and the GNU General Public License along with this program. If not, see |
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* <http://www.gnu.org/licenses/>. |
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* |
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* The authors can be reached via e-mail to <support@deliantra.net> |
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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 |
