X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fhistory.h;h=fdc77ada3b4e4eac9117ef0a77167308b929aee4;hp=df56307bc389880aee353cbc9aee14e4fba07c13;hb=d720778b2b9c2de9e9398220364b99d4d6406372;hpb=436fa5c8fa5302f69a83ad28491702c5dc3d4af7

diff --git a/src/history.h b/src/history.h
index df56307b..fdc77ada 100644
--- a/src/history.h
+++ b/src/history.h
@@ -1,7 +1,7 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
   Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
-  Copyright (C) 2008-2009 Marco Costalba
+  Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -28,6 +28,7 @@
 #include "depth.h"
 #include "move.h"
 #include "piece.h"
+#include "value.h"
 
 
 ////
@@ -47,14 +48,14 @@ public:
   History();
   void clear();
   void success(Piece p, Square to, Depth d);
-  void failure(Piece p, Square to);
+  void failure(Piece p, Square to, Depth d);
   int move_ordering_score(Piece p, Square to) const;
-  bool ok_to_prune(Piece p, Square to, Depth d) const;
+  void set_gain(Piece p, Square to, Value delta);
+  Value gain(Piece p, Square to) const;
 
 private:
   int history[16][64];  // [piece][square]
-  int successCount[16][64];
-  int failureCount[16][64];
+  int maxStaticValueDelta[16][64];  // [piece][from_square][to_square]
 };
 
 
@@ -69,12 +70,8 @@ private:
 /// the effect that parts of the search tree which have been searched
 /// recently have a bigger importance for move ordering than the moves which
 /// have been searched a long time ago.
-///
-/// Note that HistoryMax should probably be changed whenever the constant
-/// OnePly in depth.h is changed. This is somewhat annoying. Perhaps it
-/// would be better to scale down the history table at regular intervals?
 
-const int HistoryMax = 50000;
+const int HistoryMax = 50000 * OnePly;
 
 
 #endif // !defined(HISTORY_H_INCLUDED)