39 lines
1.2 KiB
C++
39 lines
1.2 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2010-2014 Danny Robson <danny@nerdcruft.net>
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*/
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#include "adler.hpp"
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#include "debug.hpp"
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#include "fletcher.hpp"
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static const unsigned MODULUS = 65521;
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//-----------------------------------------------------------------------------
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uint32_t
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adler32 (const void* restrict _data, size_t _size)
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{
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return adler32 (static_cast<const uint8_t*> (_data),
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static_cast<const uint8_t*> (_data) + _size);
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}
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//-----------------------------------------------------------------------------
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uint32_t
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adler32 (const uint8_t *first, const uint8_t *last)
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{
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return fletcher<32, MODULUS, 1, 0> (first, last - first);
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}
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