2 Stockfish, a UCI chess playing engine derived from Glaurung 2.1
3 Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
4 Copyright (C) 2008 Marco Costalba
6 Stockfish is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 Stockfish is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #if !defined(SEARCH_H_INCLUDED)
22 #define SEARCH_H_INCLUDED
42 const int PLY_MAX = 100;
43 const int PLY_MAX_PLUS_2 = 102;
44 const int KILLER_MAX = 2;
51 /// The SearchStack struct keeps track of the information we need to remember
52 /// from nodes shallower and deeper in the tree during the search. Each
53 /// search thread has its own array of SearchStack objects, indexed by the
59 Value currentMoveCaptureValue;
62 Move killers[KILLER_MAX];
71 extern SearchStack EmptySearchStack;
72 extern TranspositionTable TT;
73 extern int ActiveThreads;
76 // Perhaps better to make H local, and pass as parameter to MovePicker?
84 extern void init_threads();
85 extern void stop_threads();
86 extern void think(const Position &pos, bool infinite, bool ponder, int side_to_move,
87 int time[], int increment[], int movesToGo, int maxDepth,
88 int maxNodes, int maxTime, Move searchMoves[]);
89 extern int64_t nodes_searched();
92 #endif // !defined(SEARCH_H_INCLUDED)