+++ /dev/null
-/*
- 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) 2015-2018 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 <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef PAWNS_H_INCLUDED
-#define PAWNS_H_INCLUDED
-
-#include "misc.h"
-#include "position.h"
-#include "types.h"
-
-namespace Pawns {
-
-/// Pawns::Entry contains various information about a pawn structure. A lookup
-/// to the pawn hash table (performed by calling the probe function) returns a
-/// pointer to an Entry object.
-
-struct Entry {
-
- Score pawn_score(Color c) const { return scores[c]; }
- Bitboard pawn_attacks(Color c) const { return pawnAttacks[c]; }
- Bitboard passed_pawns(Color c) const { return passedPawns[c]; }
- Bitboard pawn_attacks_span(Color c) const { return pawnAttacksSpan[c]; }
- int weak_unopposed(Color c) const { return weakUnopposed[c]; }
- int pawn_asymmetry() const { return asymmetry; }
- int open_files() const { return openFiles; }
-
- int semiopen_file(Color c, File f) const {
- return semiopenFiles[c] & (1 << f);
- }
-
- int pawns_on_same_color_squares(Color c, Square s) const {
- return pawnsOnSquares[c][bool(DarkSquares & s)];
- }
-
- template<Color Us>
- Score king_safety(const Position& pos) {
- return kingSquares[Us] == pos.square<KING>(Us) && castlingRights[Us] == pos.can_castle(Us)
- ? kingSafety[Us] : (kingSafety[Us] = do_king_safety<Us>(pos));
- }
-
- template<Color Us>
- Score do_king_safety(const Position& pos);
-
- template<Color Us>
- Value evaluate_shelter(const Position& pos, Square ksq);
-
- Key key;
- Score scores[COLOR_NB];
- Bitboard passedPawns[COLOR_NB];
- Bitboard pawnAttacks[COLOR_NB];
- Bitboard pawnAttacksSpan[COLOR_NB];
- Square kingSquares[COLOR_NB];
- Score kingSafety[COLOR_NB];
- int weakUnopposed[COLOR_NB];
- int castlingRights[COLOR_NB];
- int semiopenFiles[COLOR_NB];
- int pawnsOnSquares[COLOR_NB][COLOR_NB]; // [color][light/dark squares]
- int asymmetry;
- int openFiles;
-};
-
-typedef HashTable<Entry, 16384> Table;
-
-void init();
-Entry* probe(const Position& pos);
-
-} // namespace Pawns
-
-#endif // #ifndef PAWNS_H_INCLUDED