Remove HistoryStats

[stockfish] / src / bitboard.h

diff --git a/src/bitboard.h b/src/bitboard.h
index 715f6c4af485bf8bb7f1313601cb6710024ae0f2..f41abeb28c0013ece24cb98a08dd700c1fd0a98c 100644 (file)
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -291,7 +291,7 @@ inline Square lsb(Bitboard b) {
 
 inline Square msb(Bitboard b) {
   assert(b);
-  return Square(63 - __builtin_clzll(b));
+  return Square(63 ^ __builtin_clzll(b));
 }
 
 #elif defined(_WIN64) && defined(_MSC_VER)