mirror of
https://github.com/official-stockfish/Stockfish.git
synced 2026-07-23 05:07:14 +00:00
Joost VandeVondele
8a3df0f92f
Add missing copyright headers, and refer to the AUTHORS file for copyright owners. Refer to 'The Stockfish developers (see AUTHORS file)' for authors.
75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
/*
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Stockfish, a UCI chess playing engine derived from Glaurung 2.1
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Copyright (C) 2004-2020 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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// Constants used in NNUE evaluation function
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#ifndef NNUE_COMMON_H_INCLUDED
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#define NNUE_COMMON_H_INCLUDED
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#if defined(USE_AVX2)
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#include <immintrin.h>
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#elif defined(USE_SSE41)
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#include <smmintrin.h>
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#elif defined(USE_SSSE3)
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#include <tmmintrin.h>
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#elif defined(USE_SSE2)
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#include <emmintrin.h>
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#endif
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namespace Eval::NNUE {
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// Version of the evaluation file
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constexpr std::uint32_t kVersion = 0x7AF32F16u;
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// Constant used in evaluation value calculation
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constexpr int FV_SCALE = 16;
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constexpr int kWeightScaleBits = 6;
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// Size of cache line (in bytes)
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constexpr std::size_t kCacheLineSize = 64;
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// SIMD width (in bytes)
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#if defined(USE_AVX2)
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constexpr std::size_t kSimdWidth = 32;
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#elif defined(USE_SSE2)
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constexpr std::size_t kSimdWidth = 16;
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#elif defined(IS_ARM)
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constexpr std::size_t kSimdWidth = 16;
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#endif
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constexpr std::size_t kMaxSimdWidth = 32;
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// Type of input feature after conversion
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using TransformedFeatureType = std::uint8_t;
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using IndexType = std::uint32_t;
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// Round n up to be a multiple of base
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template <typename IntType>
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constexpr IntType CeilToMultiple(IntType n, IntType base) {
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return (n + base - 1) / base * base;
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}
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} // namespace Eval::NNUE
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#endif // #ifndef NNUE_COMMON_H_INCLUDED
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