mirror of
https://github.com/opelly27/Stockfish.git
synced 2026-05-20 02:47:45 +00:00
Disservin
a5675f19d8
Follow up cleanup of #4968, removes the global variables from search and instead uses a dedicated tb config struct. closes https://github.com/official-stockfish/Stockfish/pull/4982 No functional change
76 lines
2.2 KiB
C++
76 lines
2.2 KiB
C++
/*
|
|
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
|
|
Copyright (C) 2004-2024 The Stockfish developers (see AUTHORS file)
|
|
|
|
Stockfish is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
Stockfish is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef TBPROBE_H
|
|
#define TBPROBE_H
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
|
|
namespace Stockfish {
|
|
class Position;
|
|
class OptionsMap;
|
|
|
|
using Depth = int;
|
|
|
|
namespace Search {
|
|
struct RootMove;
|
|
using RootMoves = std::vector<RootMove>;
|
|
}
|
|
}
|
|
|
|
namespace Stockfish::Tablebases {
|
|
|
|
struct Config {
|
|
int cardinality = 0;
|
|
bool rootInTB = false;
|
|
bool useRule50 = false;
|
|
Depth probeDepth = 0;
|
|
};
|
|
|
|
enum WDLScore {
|
|
WDLLoss = -2, // Loss
|
|
WDLBlessedLoss = -1, // Loss, but draw under 50-move rule
|
|
WDLDraw = 0, // Draw
|
|
WDLCursedWin = 1, // Win, but draw under 50-move rule
|
|
WDLWin = 2, // Win
|
|
};
|
|
|
|
// Possible states after a probing operation
|
|
enum ProbeState {
|
|
FAIL = 0, // Probe failed (missing file table)
|
|
OK = 1, // Probe successful
|
|
CHANGE_STM = -1, // DTZ should check the other side
|
|
ZEROING_BEST_MOVE = 2 // Best move zeroes DTZ (capture or pawn move)
|
|
};
|
|
|
|
extern int MaxCardinality;
|
|
|
|
|
|
void init(const std::string& paths);
|
|
WDLScore probe_wdl(Position& pos, ProbeState* result);
|
|
int probe_dtz(Position& pos, ProbeState* result);
|
|
bool root_probe(Position& pos, Search::RootMoves& rootMoves, bool rule50);
|
|
bool root_probe_wdl(Position& pos, Search::RootMoves& rootMoves, bool rule50);
|
|
Config rank_root_moves(const OptionsMap& options, Position& pos, Search::RootMoves& rootMoves);
|
|
|
|
} // namespace Stockfish::Tablebases
|
|
|
|
#endif
|