42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
/*
|
|
* This file is part of libgim.
|
|
*
|
|
* libgim is free software: you can redistribute it and/or modify it under the
|
|
* terms of the GNU General Public License as published by the Free Software
|
|
* Foundation, either version 3 of the License, or (at your option) any later
|
|
* version.
|
|
*
|
|
* libgim 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 GNU General Public License
|
|
* along with libgim. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Copyright 2010-2014 Danny Robson <danny@nerdcruft.net>
|
|
*/
|
|
|
|
#include "adler.hpp"
|
|
|
|
#include "debug.hpp"
|
|
#include "fletcher.hpp"
|
|
|
|
static const unsigned MODULUS = 65521;
|
|
|
|
//-----------------------------------------------------------------------------
|
|
uint32_t
|
|
adler32 (const void* restrict _data, size_t _size)
|
|
{
|
|
return adler32 (static_cast<const uint8_t*> (_data),
|
|
static_cast<const uint8_t*> (_data) + _size);
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
uint32_t
|
|
adler32 (const uint8_t *first, const uint8_t *last)
|
|
{
|
|
return fletcher<32, MODULUS, 1, 0> (first, last - first);
|
|
}
|