X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;ds=sidebyside;f=src%2Fbitboard.h;h=e390b01855447186fcc6c991bd04118b9c10be9b;hb=c0cb713a000ef176cdad16defe640b7b6432a4a9;hp=9aa3375026f6ee722ef256c5956bb840e47730cd;hpb=6d24ef8585c2ed5618eb9b4ab1d8ee35a05ce2cd;p=stockfish

diff --git a/src/bitboard.h b/src/bitboard.h
index 9aa33750..e390b018 100644
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -83,18 +83,18 @@ struct Magic {
   Bitboard* attacks;
   unsigned  shift;
 
-  /// looks up the index using the 'magic bitboards' approach.
+  // Compute the attack's index using the 'magic bitboards' approach
   unsigned index(Bitboard occupied) const {
 
-      if (HasPext)
-          return unsigned(pext(occupied, mask));
+    if (HasPext)
+        return unsigned(pext(occupied, mask));
 
-      if (Is64Bit)
-          return unsigned(((occupied & mask) * magic) >> shift);
+    if (Is64Bit)
+        return unsigned(((occupied & mask) * magic) >> shift);
 
-      unsigned lo = unsigned(occupied) & unsigned(mask);
-      unsigned hi = unsigned(occupied >> 32) & unsigned(mask >> 32);
-      return (lo * unsigned(magic) ^ hi * unsigned(magic >> 32)) >> shift;
+    unsigned lo = unsigned(occupied) & unsigned(mask);
+    unsigned hi = unsigned(occupied >> 32) & unsigned(mask >> 32);
+    return (lo * unsigned(magic) ^ hi * unsigned(magic >> 32)) >> shift;
   }
 };
 
@@ -241,8 +241,8 @@ template<> inline int distance<Rank>(Square x, Square y) { return distance(rank_
 template<PieceType Pt>
 inline Bitboard attacks_bb(Square s, Bitboard occupied) {
 
-  const Magic& M = Pt == ROOK ? RookMagics[s] : BishopMagics[s];
-  return M.attacks[M.index(occupied)];
+  const Magic& m = Pt == ROOK ? RookMagics[s] : BishopMagics[s];
+  return m.attacks[m.index(occupied)];
 }
 
 inline Bitboard attacks_bb(PieceType pt, Square s, Bitboard occupied) {