X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmovepick.h;h=e69255e604b117f38e1900b397fff43ec159e398;hp=fc090d296b80af9336fbd78151aab01ce1ca37d6;hb=4c95edddbf1aaec22c343adaca4796df0137e4c3;hpb=ec6aab01366ba1d2de27084d3cc7415a31aa5a24

diff --git a/src/movepick.h b/src/movepick.h
index fc090d29..e69255e6 100644
--- a/src/movepick.h
+++ b/src/movepick.h
@@ -66,6 +66,26 @@ typedef Stats<Value, false> HistoryStats;
 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
@@ -84,6 +104,7 @@ public:
   MovePicker(const Position&, Move, Depth, Search::Stack*);
 
   Move next_move();
+  int see_sign() const;
 
 private:
   template<GenType> void score();
@@ -100,7 +121,7 @@ private:
   Square recaptureSquare;
   Value threshold;
   int stage;
-  ExtMove *endQuiets, *endBadCaptures = moves + MAX_MOVES - 1;
+  ExtMove* endBadCaptures = moves + MAX_MOVES - 1;
   ExtMove moves[MAX_MOVES], *cur = moves, *endMoves = moves;
 };