41 lines
1.4 KiB
C++
41 lines
1.4 KiB
C++
/*
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Stockfish, a UCI chess playing engine derived from Glaurung 2.1
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Copyright (C) 2004-2021 The Stockfish developers (see AUTHORS file)
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Stockfish is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Stockfish is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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// Class for difference calculation of NNUE evaluation function
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#ifndef NNUE_ACCUMULATOR_H_INCLUDED
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#define NNUE_ACCUMULATOR_H_INCLUDED
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#include "nnue_architecture.h"
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namespace Stockfish::Eval::NNUE {
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// The accumulator of a StateInfo without parent is set to the INIT state
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enum AccumulatorState { EMPTY, COMPUTED, INIT };
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// Class that holds the result of affine transformation of input features
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struct alignas(kCacheLineSize) Accumulator {
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std::int16_t
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accumulation[2][kRefreshTriggers.size()][kTransformedFeatureDimensions];
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AccumulatorState state[2];
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};
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} // namespace Stockfish::Eval::NNUE
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#endif // NNUE_ACCUMULATOR_H_INCLUDED
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