X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fhistory.h;h=4d84be7054858eb37407b097b87e5aa2320e7846;hp=c01893321dd63a33cd9aa4abfa0e1804caa7de2e;hb=90e83fa879ccdba066962ad0a9aa5be7c4cd1956;hpb=e06c99cad087f2937f14b850d4075749ca23e996

diff --git a/src/history.h b/src/history.h
index c0189332..4d84be70 100644
--- a/src/history.h
+++ b/src/history.h
@@ -21,12 +21,7 @@
 #define HISTORY_H_INCLUDED
 
 #include <cstring>
-
-#include "depth.h"
-#include "piece.h"
-#include "square.h"
-#include "value.h"
-
+#include "types.h"
 
 /// The History class stores statistics about how often different moves
 /// have been successful or unsuccessful during the current search. These
@@ -38,14 +33,13 @@
 class History {
 
 public:
-  History() { clear(); }
   void clear();
   Value value(Piece p, Square to) const;
   void update(Piece p, Square to, Value bonus);
   Value gain(Piece p, Square to) const;
-  void update_gain(Piece p, Square to, Value gain);
+  void update_gain(Piece p, Square to, Value g);
 
-  static const Value MaxValue = Value(1 << 29); // To avoid an overflow
+  static const Value MaxValue = Value(2000);
 
 private:
   Value history[16][64];  // [piece][to_square]
@@ -62,15 +56,15 @@ inline Value History::value(Piece p, Square to) const {
 }
 
 inline void History::update(Piece p, Square to, Value bonus) {
-  if (abs(history[p][to]) < MaxValue) history[p][to] += bonus;
+  if (abs(history[p][to] + bonus) < MaxValue) history[p][to] += bonus;
 }
 
 inline Value History::gain(Piece p, Square to) const {
   return maxGains[p][to];
 }
 
-inline void History::update_gain(Piece p, Square to, Value gain) {
-  maxGains[p][to] = Max(gain, maxGains[p][to] - 1);
+inline void History::update_gain(Piece p, Square to, Value g) {
+  maxGains[p][to] = Max(g, maxGains[p][to] - 1);
 }
 
 #endif // !defined(HISTORY_H_INCLUDED)