X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fendgame.h;h=c184cb3fd50ff3bfcc51595d42be19b49d7ac5eb;hp=4642e44857b4ac7500652941f57243ea736e5260;hb=HEAD;hpb=09bef14c76e119103cc1a9404cbde7e249205deb
diff --git a/src/endgame.h b/src/endgame.h
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-/*
- 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) 2015-2020 Marco Costalba, Joona Kiiski, Gary Linscott, 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
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- Stockfish is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see .
-*/
-
-#ifndef ENDGAME_H_INCLUDED
-#define ENDGAME_H_INCLUDED
-
-#include
-#include
-#include
-#include
-#include
-
-#include "position.h"
-#include "types.h"
-
-
-/// EndgameCode lists all supported endgame functions by corresponding codes
-
-enum EndgameCode {
-
- EVALUATION_FUNCTIONS,
- KNNK, // KNN vs K
- KNNKP, // KNN vs KP
- KXK, // Generic "mate lone king" eval
- KBNK, // KBN vs K
- KPK, // KP vs K
- KRKP, // KR vs KP
- KRKB, // KR vs KB
- KRKN, // KR vs KN
- KQKP, // KQ vs KP
- KQKR, // KQ vs KR
-
- SCALING_FUNCTIONS,
- KBPsK, // KB and pawns vs K
- KQKRPs, // KQ vs KR and pawns
- KRPKR, // KRP vs KR
- KRPKB, // KRP vs KB
- KRPPKRP, // KRPP vs KRP
- KPsK, // K and pawns vs K
- KBPKB, // KBP vs KB
- KBPPKB, // KBPP vs KB
- KBPKN, // KBP vs KN
- KNPK, // KNP vs K
- KNPKB, // KNP vs KB
- KPKP // KP vs KP
-};
-
-
-/// Endgame functions can be of two types depending on whether they return a
-/// Value or a ScaleFactor.
-
-template using
-eg_type = typename std::conditional<(E < SCALING_FUNCTIONS), Value, ScaleFactor>::type;
-
-
-/// Base and derived functors for endgame evaluation and scaling functions
-
-template
-struct EndgameBase {
-
- explicit EndgameBase(Color c) : strongSide(c), weakSide(~c) {}
- virtual ~EndgameBase() = default;
- virtual T operator()(const Position&) const = 0;
-
- const Color strongSide, weakSide;
-};
-
-
-template>
-struct Endgame : public EndgameBase {
-
- explicit Endgame(Color c) : EndgameBase(c) {}
- T operator()(const Position&) const override;
-};
-
-
-/// The Endgames namespace handles the pointers to endgame evaluation and scaling
-/// base objects in two std::map. We use polymorphism to invoke the actual
-/// endgame function by calling its virtual operator().
-
-namespace Endgames {
-
- template using Ptr = std::unique_ptr>;
- template using Map = std::unordered_map>;
-
- extern std::pair