typedef uint64_t Bitboard;
const int MAX_MOVES = 256;
-const int MAX_PLY = 100;
+const int MAX_PLY = 120;
const int MAX_PLY_PLUS_6 = MAX_PLY + 6;
/// A move needs 16 bits to be stored
CASTLING = 3 << 14
};
+enum Color {
+ WHITE, BLACK, NO_COLOR, COLOR_NB = 2
+};
+
+enum CastlingSide {
+ KING_SIDE, QUEEN_SIDE, CASTLING_SIDE_NB = 2
+};
+
enum CastlingFlag { // Defined as in PolyGlot book hash key
NO_CASTLING,
WHITE_OO,
CASTLING_FLAG_NB = 16
};
-enum CastlingSide {
- KING_SIDE,
- QUEEN_SIDE,
- CASTLING_SIDE_NB = 2
+template<Color C, CastlingSide S> struct MakeCastling {
+ static const CastlingFlag
+ flag = C == WHITE ? S == QUEEN_SIDE ? WHITE_OOO : WHITE_OO
+ : S == QUEEN_SIDE ? BLACK_OOO : BLACK_OO;
};
enum Phase {
PIECE_NB = 16
};
-enum Color {
- WHITE, BLACK, NO_COLOR, COLOR_NB = 2
-};
-
enum Depth {
ONE_PLY = 2,
return Square((r << 3) | f);
}
+inline CastlingFlag operator|(Color c, CastlingSide s) {
+ return CastlingFlag(WHITE_OO << ((s == QUEEN_SIDE) + 2 * c));
+}
+
inline Value mate_in(int ply) {
return VALUE_MATE - ply;
}
return Piece((c << 3) | pt);
}
-inline CastlingFlag make_castling_flag(Color c, CastlingSide s) {
- return CastlingFlag(WHITE_OO << ((s == QUEEN_SIDE) + 2 * c));
-}
-
inline PieceType type_of(Piece p) {
return PieceType(p & 7);
}
return ((s >> 3) ^ s) & 1;
}
-inline char file_to_char(File f, bool tolower = true) {
+inline char to_char(File f, bool tolower = true) {
return char(f - FILE_A + (tolower ? 'a' : 'A'));
}
-inline char rank_to_char(Rank r) {
+inline char to_char(Rank r) {
return char(r - RANK_1 + '1');
}
#include <string>
-inline const std::string square_to_string(Square s) {
- char ch[] = { file_to_char(file_of(s)), rank_to_char(rank_of(s)), 0 };
+inline const std::string to_string(Square s) {
+ char ch[] = { to_char(file_of(s)), to_char(rank_of(s)), 0 };
return ch;
}