/*
* This file is part of Deliantra, the Roguelike Realtime MMORPG.
*
* Copyright (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team
* Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
*
* Deliantra is free software: you can redistribute it and/or modify it under
* the terms of the Affero GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the Affero GNU General Public License
* and the GNU General Public License along with this program. If not, see
* .
*
* The authors can be reached via e-mail to
*/
#ifndef CRC_H__
#define CRC_H__
#include "traits.h"
struct crc32
{
uint32_t crc;
crc32 ()
{
crc = ~uint32_t (0);
}
void
operator ()(const uint8_t byte)
{
extern const uint32_t crc_32_tab[256];
crc = crc_32_tab[uint8_t (crc) ^ byte] ^ (crc >> 8);
}
operator uint32_t () { return crc; }
};
#endif