X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fposition.h;h=a0a9a306b7aeaf95e52d4f1cd95141396298ade6;hp=343751ede6201175c894c99c68c002b6495625ff;hb=70a38d726410dae06949e9cfd6be2fd58743101a;hpb=c645587270c2b08d327d290d0ae3c3f5e0a30eee

diff --git a/src/position.h b/src/position.h
index 343751ed..a0a9a306 100644
--- a/src/position.h
+++ b/src/position.h
@@ -100,14 +100,15 @@ public:
 
   // Castling
   int castling_rights(Color c) const;
-  bool can_castle(CastlingRight cr) const;
-  bool castling_impeded(CastlingRight cr) const;
-  Square castling_rook_square(CastlingRight cr) const;
+  bool can_castle(CastlingRights cr) const;
+  bool castling_impeded(CastlingRights cr) const;
+  Square castling_rook_square(CastlingRights cr) const;
 
   // Checking
   Bitboard checkers() const;
   Bitboard blockers_for_king(Color c) const;
   Bitboard check_squares(PieceType pt) const;
+  bool is_discovery_check_on_king(Color c, Move m) const;
 
   // Attacks to/from a given square
   Bitboard attackers_to(Square s) const;
@@ -267,7 +268,7 @@ inline bool Position::is_on_semiopen_file(Color c, Square s) const {
   return !(pieces(c, PAWN) & file_bb(s));
 }
 
-inline bool Position::can_castle(CastlingRight cr) const {
+inline bool Position::can_castle(CastlingRights cr) const {
   return st->castlingRights & cr;
 }
 
@@ -275,11 +276,11 @@ inline int Position::castling_rights(Color c) const {
   return st->castlingRights & (c == WHITE ? WHITE_CASTLING : BLACK_CASTLING);
 }
 
-inline bool Position::castling_impeded(CastlingRight cr) const {
+inline bool Position::castling_impeded(CastlingRights cr) const {
   return byTypeBB[ALL_PIECES] & castlingPath[cr];
 }
 
-inline Square Position::castling_rook_square(CastlingRight cr) const {
+inline Square Position::castling_rook_square(CastlingRights cr) const {
   return castlingRookSquare[cr];
 }
 
@@ -316,6 +317,10 @@ inline Bitboard Position::check_squares(PieceType pt) const {
   return st->checkSquares[pt];
 }
 
+inline bool Position::is_discovery_check_on_king(Color c, Move m) const {
+  return st->blockersForKing[c] & from_sq(m);
+}
+
 inline bool Position::pawn_passed(Color c, Square s) const {
   return !(pieces(~c, PAWN) & passed_pawn_span(c, s));
 }