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https://github.com/official-stockfish/Stockfish.git
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22548cb0c0
Fixes problems with non-ASCII characters in paths. Fixes #3424. Changes - Bump the minimum supported Clang version to 11 to support std::filesystem - Use std::optional for empty values instead of string sentinels like "None" - Remove the FixedString class - Move the EvalFile network path from the network struct to the engine - Simplify parts of the command-line handling - Remove the old dual-net logic from export_net - And ofc we now support non-ascii paths for windows Behavior Change - Because the EvalFile is no longer part of the network, it won't be included in the hashing, thus the network sharing is no longer dependent on the EvalFile path - As a result, if the binary version and network are the same, changing only the EvalFile location will now reuse the same shared network This also fixes a master bug where: ``` export_net None setoption name EvalFile value None export_net None Failed to export a net ``` would fail on the second export. With this patch, the second export succeeds. Quick Fishtest Check that nets load like normal. https://tests.stockfishchess.org/tests/view/6a455593f97ff95f787954da <img width="833" height="1137" alt="image" src="https://github.com/user-attachments/assets/fffee63b-c63a-4d5e-b13d-87d58bc28c88" /> closes https://github.com/official-stockfish/Stockfish/pull/6937 No functional change Co-authored-by: anematode <timothy.herchen@gmail.com>
101 lines
3.0 KiB
C++
101 lines
3.0 KiB
C++
/*
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Stockfish, a UCI chess playing engine derived from Glaurung 2.1
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Copyright (C) 2004-2026 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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// Code for calculating NNUE evaluation function
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#include "nnue_misc.h"
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#include <cmath>
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#include <cstdlib>
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#include <iomanip>
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#include <iosfwd>
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#include <iostream>
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#include <memory>
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#include <sstream>
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#include "../position.h"
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#include "../misc.h"
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#include "../types.h"
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#include "../uci.h"
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#include "network.h"
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#include "nnue_accumulator.h"
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namespace Stockfish::Eval::NNUE {
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namespace {
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// Converts a Value into pawns, always keeping two decimals
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void format_cp_aligned_dot(Value v, std::stringstream& stream, const Position& pos) {
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const double pawns = std::abs(0.01 * UCIEngine::to_cp(v, pos));
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stream << (v < 0 ? '-'
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: v > 0 ? '+'
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: ' ')
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<< std::setiosflags(std::ios::fixed) << std::setw(6) << std::setprecision(2) << pawns;
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}
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}
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// Returns a string with the value of each piece on a board,
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// and a table for (PSQT, Layers) values bucket by bucket.
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std::string
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trace(Position& pos, const Eval::NNUE::Network& network, Eval::NNUE::AccumulatorCaches& caches) {
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std::stringstream ss;
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auto accumulators = std::make_unique<AccumulatorStack>();
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accumulators->reset();
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auto t = network.trace_evaluate(pos, *accumulators, caches);
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ss << "NNUE network contributions (Normalized, "
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<< (pos.side_to_move() == WHITE ? "White to move)" : "Black to move)") << std::endl
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<< "+------------+------------+------------+------------+\n"
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<< "| Bucket | Material | Positional | Total |\n"
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<< "| | (PSQT) | (Layers) | |\n"
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<< "+------------+------------+------------+------------+\n";
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for (usize bucket = 0; bucket < LayerStacks; ++bucket)
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{
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ss << "| " << bucket << " " //
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<< " | ";
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format_cp_aligned_dot(t.psqt[bucket], ss, pos);
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ss << " " //
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<< " | ";
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format_cp_aligned_dot(t.positional[bucket], ss, pos);
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ss << " " //
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<< " | ";
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format_cp_aligned_dot(t.psqt[bucket] + t.positional[bucket], ss, pos);
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ss << " " //
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<< " |";
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if (bucket == t.correctBucket)
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ss << " <-- this bucket is used";
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ss << '\n';
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}
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ss << "+------------+------------+------------+------------+\n";
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return ss.str();
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}
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} // namespace Stockfish::Eval::NNUE
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