2 Stockfish, a UCI chess playing engine derived from Glaurung 2.1
3 Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
5 Stockfish is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, either version 3 of the License, or
8 (at your option) any later version.
10 Stockfish is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
19 // header used in NNUE evaluation function
21 #ifndef NNUE_EVALUATE_NNUE_H_INCLUDED
22 #define NNUE_EVALUATE_NNUE_H_INCLUDED
24 #include "nnue_feature_transformer.h"
28 namespace Stockfish::Eval::NNUE {
30 // Hash value of evaluation function structure
31 constexpr std::uint32_t HashValue =
32 FeatureTransformer::get_hash_value() ^ Network::get_hash_value();
35 // Deleter for automating release of memory area
37 struct AlignedDeleter {
38 void operator()(T* ptr) const {
40 std_aligned_free(ptr);
45 struct LargePageDeleter {
46 void operator()(T* ptr) const {
48 aligned_large_pages_free(ptr);
53 using AlignedPtr = std::unique_ptr<T, AlignedDeleter<T>>;
56 using LargePagePtr = std::unique_ptr<T, LargePageDeleter<T>>;
58 std::string trace(Position& pos);
59 Value evaluate(const Position& pos, bool adjusted = false, int* complexity = nullptr);
60 void hint_common_parent_position(const Position& pos);
62 bool load_eval(std::string name, std::istream& stream);
63 bool save_eval(std::ostream& stream);
64 bool save_eval(const std::optional<std::string>& filename);
66 } // namespace Stockfish::Eval::NNUE
68 #endif // #ifndef NNUE_EVALUATE_NNUE_H_INCLUDED