Simplify pawn asymmetry (remove use of semiopen files). (#2054)

[stockfish] / src / pawns.h

diff --git a/src/pawns.h b/src/pawns.h
index 67f966ada59900c71b3a2e02249d456a00669f25..0426ec3683d68de129f9fcea19357720fcb6d522 100644 (file)
--- a/src/pawns.h
+++ b/src/pawns.h
@@ -38,7 +38,7 @@ struct Entry {
   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 passed_count() const { return passedCount; }
 
   int semiopen_file(Color c, File f) const {
     return semiopenFiles[c] & (1 << f);
@@ -71,7 +71,7 @@ struct Entry {
   int castlingRights[COLOR_NB];
   int semiopenFiles[COLOR_NB];
   int pawnsOnSquares[COLOR_NB][COLOR_NB]; // [color][light/dark squares]
-  int asymmetry;
+  int passedCount;
 };
 
 typedef HashTable<Entry, 16384> Table;