Use a const pointer-to-member array for attacks

[stockfish] / src / position.h

diff --git a/src/position.h b/src/position.h
index 1c422088d27ca0d3aba70c9ce6fd49a2a456abe4..5285c8f928afb0df26f1c50667e4131bad68eaa3 100644 (file)
--- a/src/position.h
+++ b/src/position.h
@@ -372,8 +372,7 @@ private:
 
 /// An array of member functions to dispatch attacks_square
 typedef Bitboard (Position::* Piece_attacks_fn)(Square s) const;
-extern Piece_attacks_fn piece_attacks_fn[7];
-extern void init_piece_attacks_fn();
+extern const Piece_attacks_fn piece_attacks_fn[];
 
 ////
 //// Inline functions