libcruft-util/hash/bsdsum.cpp

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/*
2015-04-13 18:05:28 +10:00
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
2015-04-13 18:05:28 +10:00
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2010-2018 Danny Robson <danny@nerdcruft.net>
*/
#include "bsdsum.hpp"
#include "../bitwise.hpp"
using util::hash::bsdsum;
///////////////////////////////////////////////////////////////////////////////
typename bsdsum::digest_t
bsdsum::operator() (util::view<const uint8_t*> data) const noexcept
{
digest_t accum = 0;
for (const auto i: data)
accum = util::rotater (accum, 1) + i;
return accum;
}