Get rid of Shift[] tables

[stockfish] / src / bitboard.h

diff --git a/src/bitboard.h b/src/bitboard.h
index 5b2ec249febfebe92169ec241e40e78fef1d520d..b3a0033c65832b84fe4089d149861a34d5ddde62 100644 (file)
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -176,12 +176,12 @@ inline Bitboard in_front_bb(Color c, Square s) {
 
 inline Bitboard rook_attacks_bb(Square s, Bitboard occ) {
   const Magics& m = RMagics[s];
-  return RAttacks[m.index + (((occ & m.mask) * m.mult) >> m.shift)];
+  return RAttacks[m.offset + (((occ & m.mask) * m.mult) >> m.shift)];
 }
 
 inline Bitboard bishop_attacks_bb(Square s, Bitboard occ) {
   const Magics& m = BMagics[s];
-  return BAttacks[m.index + (((occ & m.mask) * m.mult) >> m.shift)];
+  return BAttacks[m.offset + (((occ & m.mask) * m.mult) >> m.shift)];
 }
 
 #else // if !defined(IS_64BIT)