/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
- Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad
- Copyright (C) 2015-2019 Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad
+ Copyright (C) 2004-2023 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
#ifndef SEARCH_H_INCLUDED
#define SEARCH_H_INCLUDED
+#include <cstdint>
#include <vector>
#include "misc.h"
#include "movepick.h"
#include "types.h"
+namespace Stockfish {
+
class Position;
namespace Search {
-/// Threshold used for countermoves based pruning
-constexpr int CounterMovePruneThreshold = 0;
-
-/// Stack struct keeps track of the information we need to remember from nodes
-/// shallower and deeper in the tree during the search. Each search thread has
-/// its own array of Stack objects, indexed by the current ply.
+// Stack struct keeps track of the information we need to remember from nodes
+// shallower and deeper in the tree during the search. Each search thread has
+// its own array of Stack objects, indexed by the current ply.
struct Stack {
Move* pv;
Value staticEval;
int statScore;
int moveCount;
+ bool inCheck;
+ bool ttPv;
+ bool ttHit;
+ int doubleExtensions;
+ int cutoffCnt;
};
-/// RootMove struct is used for moves at the root of the tree. For each root move
-/// we store a score and a PV (really a refutation in the case of moves which
-/// fail low). Score is normally set at -VALUE_INFINITE for all non-pv moves.
+// RootMove struct is used for moves at the root of the tree. For each root move
+// we store a score and a PV (really a refutation in the case of moves which
+// fail low). Score is normally set at -VALUE_INFINITE for all non-pv moves.
struct RootMove {
Value score = -VALUE_INFINITE;
Value previousScore = -VALUE_INFINITE;
+ Value averageScore = -VALUE_INFINITE;
+ Value uciScore = -VALUE_INFINITE;
+ bool scoreLowerbound = false;
+ bool scoreUpperbound = false;
int selDepth = 0;
int tbRank = 0;
Value tbScore;
std::vector<Move> pv;
};
-typedef std::vector<RootMove> RootMoves;
+using RootMoves = std::vector<RootMove>;
-/// LimitsType struct stores information sent by GUI about available time to
-/// search the current move, maximum depth/time, or if we are in analysis mode.
+// LimitsType struct stores information sent by GUI about available time to
+// search the current move, maximum depth/time, or if we are in analysis mode.
struct LimitsType {
}
bool use_time_management() const {
- return !(mate | movetime | depth | nodes | perft | infinite);
+ return time[WHITE] || time[BLACK];
}
std::vector<Move> searchmoves;
} // namespace Search
+} // namespace Stockfish
+
#endif // #ifndef SEARCH_H_INCLUDED