typedef Stats<Value, true> CounterMoveStats;
typedef Stats<CounterMoveStats> CounterMoveHistoryStats;
+struct FromToStats {
+
+ Value get(Color c, Move m) const { return table[c][from_sq(m)][to_sq(m)]; }
+ void clear() { std::memset(table, 0, sizeof(table)); }
+
+ void update(Color c, Move m, Value v)
+ {
+ if (abs(int(v)) >= 324)
+ return;
+
+ Square f = from_sq(m);
+ Square t = to_sq(m);
+
+ table[c][f][t] -= table[c][f][t] * abs(int(v)) / 324;
+ table[c][f][t] += int(v) * 32;
+ }
+
+private:
+ Value table[COLOR_NB][SQUARE_NB][SQUARE_NB];
+};
/// MovePicker class is used to pick one pseudo legal move at a time from the
/// current position. The most important method is next_move(), which returns a
MovePicker(const Position&, Move, Depth, Search::Stack*);
Move next_move();
+ int see_sign() const;
private:
template<GenType> void score();
- void generate_next_stage();
- ExtMove* begin() { return moves; }
+ ExtMove* begin() { return cur; }
ExtMove* end() { return endMoves; }
const Position& pos;
Move countermove;
Depth depth;
Move ttMove;
- ExtMove killers[3];
Square recaptureSquare;
Value threshold;
int stage;
- ExtMove* endBadCaptures = moves + MAX_MOVES - 1;
- ExtMove moves[MAX_MOVES], *cur = moves, *endMoves = moves;
+ ExtMove* cur, *endMoves, *endBadCaptures;
+ ExtMove moves[MAX_MOVES];
};
#endif // #ifndef MOVEPICK_H_INCLUDED