| 1 |
root |
1.2 |
/* |
| 2 |
|
|
* This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game. |
| 3 |
|
|
* |
| 4 |
|
|
* Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
| 5 |
|
|
* Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team |
| 6 |
|
|
* Copyright (©) 1992,2007 Frank Tore Johansen |
| 7 |
|
|
* |
| 8 |
|
|
* Crossfire TRT is free software; you can redistribute it and/or modify it |
| 9 |
|
|
* under the terms of the GNU General Public License as published by the Free |
| 10 |
|
|
* Software Foundation; either version 2 of the License, or (at your option) |
| 11 |
|
|
* any later version. |
| 12 |
|
|
* |
| 13 |
|
|
* This program is distributed in the hope that it will be useful, but |
| 14 |
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 15 |
|
|
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 16 |
|
|
* for more details. |
| 17 |
|
|
* |
| 18 |
|
|
* You should have received a copy of the GNU General Public License along |
| 19 |
|
|
* with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51 |
| 20 |
|
|
* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 |
|
|
* |
| 22 |
|
|
* The authors can be reached via e-mail to <crossfire@schmorp.de> |
| 23 |
|
|
*/ |
| 24 |
|
|
|
| 25 |
root |
1.1 |
#ifndef CRC_H__ |
| 26 |
|
|
#define CRC_H__ |
| 27 |
|
|
|
| 28 |
|
|
#include "traits.h" |
| 29 |
|
|
|
| 30 |
|
|
struct crc32 |
| 31 |
|
|
{ |
| 32 |
|
|
uint32_t crc; |
| 33 |
|
|
|
| 34 |
|
|
crc32 () |
| 35 |
|
|
{ |
| 36 |
|
|
crc = ~uint32_t (0); |
| 37 |
|
|
} |
| 38 |
|
|
|
| 39 |
|
|
void |
| 40 |
|
|
operator ()(const uint8_t byte) |
| 41 |
|
|
{ |
| 42 |
|
|
extern const uint32_t crc_32_tab[256]; |
| 43 |
|
|
crc = crc_32_tab[uint8_t (crc) ^ byte] ^ (crc >> 8); |
| 44 |
|
|
} |
| 45 |
|
|
|
| 46 |
|
|
operator uint32_t () { return crc; } |
| 47 |
|
|
}; |
| 48 |
|
|
|
| 49 |
|
|
#endif |
