-inline bool Position::can_castle_kingside(Color side) const {
- return st->castleRights & (1+int(side));
+inline bool Position::can_castle_kingside(Color c) const {
+ return st->castleRights & (WHITE_OO << c);
+}
+
+inline bool Position::can_castle_queenside(Color c) const {
+ return st->castleRights & (WHITE_OOO << c);
+}
+
+inline bool Position::can_castle(Color c) const {
+ return st->castleRights & ((WHITE_OO | WHITE_OOO) << c);