/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008 Marco Costalba
+ Copyright (C) 2008-2009 Marco Costalba
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
class TTEntry {
public:
- TTEntry();
- TTEntry(Key k, Value v, ValueType t, Depth d, Move m, int generation);
+ TTEntry() {}
+ TTEntry(Key k, Value v, ValueType t, Depth d, Move m, int generation)
+ : key_ (k), data((m & 0x1FFFF) | (t << 20) | (generation << 23)),
+ value_(int16_t(v)), depth_(int16_t(d)) {}
+
Key key() const { return key_; }
Depth depth() const { return Depth(depth_); }
Move move() const { return Move(data & 0x1FFFF); }
class TranspositionTable {
public:
- TranspositionTable(unsigned mbSize);
+ TranspositionTable();
~TranspositionTable();
void set_size(unsigned mbSize);
void clear();
- void store(const Position &pos, Value v, Depth d, Move m, ValueType type);
- TTEntry* retrieve(const Position &pos) const;
+ void store(const Key posKey, Value v, ValueType type, Depth d, Move m);
+ TTEntry* retrieve(const Key posKey) const;
void new_search();
- void insert_pv(const Position &pos, Move pv[]);
- int full();
+ void insert_pv(const Position& pos, Move pv[]);
+ int full() const;
private:
- inline TTEntry* first_entry(const Position &pos) const;
+ inline TTEntry* first_entry(const Key posKey) const;
- unsigned size;
- int writes;
+ unsigned size, writes;
TTEntry* entries;
uint8_t generation;
};
-
-////
-//// Constants and variables
-////
-
-// Default transposition table size, in megabytes:
-const int TTDefaultSize = 32;
-
-
#endif // !defined(TT_H_INCLUDED)