New Imbalance Tables Tweak

[stockfish] / src / material.h

diff --git a/src/material.h b/src/material.h
index bec2d662b7d970032d3f8b6eb4f17727c4088f11..28da59dbf3303ddd0ac1319acd0948669f232948 100644 (file)
--- a/src/material.h
+++ b/src/material.h
@@ -1,8 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
-  Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad
-  Copyright (C) 2015-2016 Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad
+  Copyright (C) 2004-2020 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -39,12 +37,12 @@ namespace Material {
 
 struct Entry {
 
-  Score imbalance() const { return make_score(value, value); }
-  Phase game_phase() const { return gamePhase; }
+  Score imbalance() const { return score; }
+  Phase game_phase() const { return (Phase)gamePhase; }
   bool specialized_eval_exists() const { return evaluationFunction != nullptr; }
   Value evaluate(const Position& pos) const { return (*evaluationFunction)(pos); }
 
-  // scale_factor takes a position and a color as input and returns a scale factor
+  // scale_factor() takes a position and a color as input and returns a scale factor
   // for the given color. We have to provide the position in addition to the color
   // because the scale factor may also be a function which should be applied to
   // the position. For instance, in KBP vs K endgames, the scaling function looks
@@ -56,12 +54,12 @@ struct Entry {
   }
 
   Key key;
-  int16_t value;
+  const EndgameBase<Value>* evaluationFunction;
+  const EndgameBase<ScaleFactor>* scalingFunction[COLOR_NB]; // Could be one for each
+                                                             // side (e.g. KPKP, KBPsK)
+  Score score;
+  int16_t gamePhase;
   uint8_t factor[COLOR_NB];
-  EndgameBase<Value>* evaluationFunction;
-  EndgameBase<ScaleFactor>* scalingFunction[COLOR_NB]; // Could be one for each
-                                                       // side (e.g. KPKP, KBPsKs)
-  Phase gamePhase;
 };
 
 typedef HashTable<Entry, 8192> Table;