X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fpawns.h;h=e26ae67e0f9146d4de45f0ed9526a904404f1617;hp=aacaf7247713616910c5e0b5ddb6e3ac68ba04cd;hb=4c95edddbf1aaec22c343adaca4796df0137e4c3;hpb=be509525336b65419e708678abe4e16efb5f6f4d

diff --git a/src/pawns.h b/src/pawns.h
index aacaf724..e26ae67e 100644
--- a/src/pawns.h
+++ b/src/pawns.h
@@ -2,6 +2,7 @@
   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
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -35,7 +36,9 @@ struct Entry {
   Score pawns_score() const { return score; }
   Bitboard pawn_attacks(Color c) const { return pawnAttacks[c]; }
   Bitboard passed_pawns(Color c) const { return passedPawns[c]; }
-  int pawn_span(Color c) const { return pawnSpan[c]; }
+  Bitboard pawn_attacks_span(Color c) const { return pawnAttacksSpan[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);
@@ -50,7 +53,7 @@ struct Entry {
   }
 
   template<Color Us>
-  Score king_safety(const Position& pos, Square ksq)  {
+  Score king_safety(const Position& pos, Square ksq) {
     return  kingSquares[Us] == ksq && castlingRights[Us] == pos.can_castle(Us)
           ? kingSafety[Us] : (kingSafety[Us] = do_king_safety<Us>(pos, ksq));
   }
@@ -65,12 +68,14 @@ struct Entry {
   Score score;
   Bitboard passedPawns[COLOR_NB];
   Bitboard pawnAttacks[COLOR_NB];
+  Bitboard pawnAttacksSpan[COLOR_NB];
   Square kingSquares[COLOR_NB];
   Score kingSafety[COLOR_NB];
   int castlingRights[COLOR_NB];
   int semiopenFiles[COLOR_NB];
-  int pawnSpan[COLOR_NB];
   int pawnsOnSquares[COLOR_NB][COLOR_NB]; // [color][light/dark squares]
+  int asymmetry;
+  int openFiles;
 };
 
 typedef HashTable<Entry, 16384> Table;