X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fbitboard.h;h=b64c92e1a4c54107ef2088ddf43d69c9cafc6871;hp=37585bb19b18e8e25feb54120429b3177caa6da6;hb=8df1cd10df0869f05916d1eb19e33b66127fcb86;hpb=090e49547ecaba8c9ec696d75f2fca3020bb058a

diff --git a/src/bitboard.h b/src/bitboard.h
index 37585bb1..b64c92e1 100644
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -60,12 +60,11 @@ constexpr Bitboard Rank6BB = Rank1BB << (8 * 5);
 constexpr Bitboard Rank7BB = Rank1BB << (8 * 6);
 constexpr Bitboard Rank8BB = Rank1BB << (8 * 7);
 
-extern int SquareDistance[SQUARE_NB][SQUARE_NB];
+extern int8_t SquareDistance[SQUARE_NB][SQUARE_NB];
 
 extern Bitboard SquareBB[SQUARE_NB];
 extern Bitboard FileBB[FILE_NB];
 extern Bitboard RankBB[RANK_NB];
-extern Bitboard AdjacentFilesBB[FILE_NB];
 extern Bitboard ForwardRanksBB[COLOR_NB][RANK_NB];
 extern Bitboard BetweenBB[SQUARE_NB][SQUARE_NB];
 extern Bitboard LineBB[SQUARE_NB][SQUARE_NB];
@@ -136,7 +135,7 @@ constexpr bool more_than_one(Bitboard b) {
 }
 
 inline bool opposite_colors(Square s1, Square s2) {
-  return (bool(DarkSquares & s1) != bool(DarkSquares & s2));
+  return bool(DarkSquares & s1) != bool(DarkSquares & s2);
 }
 
 /// rank_bb() and file_bb() return a bitboard representing all the squares on
@@ -195,7 +194,7 @@ constexpr Bitboard double_pawn_attacks_bb(Bitboard b) {
 /// adjacent files of the given one.
 
 inline Bitboard adjacent_files_bb(File f) {
-  return AdjacentFilesBB[f];
+  return shift<EAST>(FileBB[f]) | shift<WEST>(FileBB[f]);
 }