X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fendgame.h;h=b8fb7e82dbd82c60e7025544609544840fb50d7b;hp=271490b186436395947fdf173c3c48cb5dad9a83;hb=67f611f3eb68a9714d41d62777913bb2a4075314;hpb=297c12e595ebc33e11be73ee4b188326418acb4f

diff --git a/src/endgame.h b/src/endgame.h
index 271490b1..b8fb7e82 100644
--- a/src/endgame.h
+++ b/src/endgame.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
@@ -45,11 +45,12 @@ enum EndgameType {
     KRKN,  // KR vs KN
     KQKR,  // KQ vs KR
     KBBKN, // KBB vs KN
+    KNNK,  // KNN vs K
     KmmKm, // K and two minors vs K and one or two minors
 
     // Scaling functions
-    KBPK,    // KBP vs K
-    KQKRP,   // KQ vs KRP
+    KBPsK,   // KB+pawns vs K
+    KQKRPs,  // KQ vs KR+pawns
     KRPKR,   // KRP vs KR
     KRPPKRP, // KRPP vs KRP
     KPsK,    // King and pawns vs king
@@ -67,7 +68,8 @@ class EndgameFunctionBase {
 public:
   EndgameFunctionBase(Color c) : strongerSide(c), weakerSide(opposite_color(c)) {}
   virtual ~EndgameFunctionBase() {}
-  virtual T apply(const Position&) = 0;
+  virtual T apply(const Position&) const = 0;
+  Color color() const { return strongerSide; }
 
 protected:
   Color strongerSide, weakerSide;
@@ -81,14 +83,16 @@ typedef EndgameFunctionBase<ScaleFactor> EndgameScalingFunctionBase;
 
 template<EndgameType>
 struct EvaluationFunction : public EndgameEvaluationFunctionBase {
+  typedef EndgameEvaluationFunctionBase Base;
   explicit EvaluationFunction(Color c): EndgameEvaluationFunctionBase(c) {}
-  Value apply(const Position&);
+  Value apply(const Position&) const;
 };
 
 template<EndgameType>
 struct ScalingFunction : public EndgameScalingFunctionBase {
+  typedef EndgameScalingFunctionBase Base;
   explicit ScalingFunction(Color c) : EndgameScalingFunctionBase(c) {}
-  ScaleFactor apply(const Position&);
+  ScaleFactor apply(const Position&) const;
 };