bool has_repeated() const;
int rule50_count() const;
Score psq_score() const;
+ Value psq_eg_stm() const;
Value non_pawn_material(Color c) const;
Value non_pawn_material() const;
void move_piece(Square from, Square to);
template<bool Do>
void do_castling(Color us, Square from, Square& to, Square& rfrom, Square& rto);
+ template<bool AfterMove>
+ Key adjust_key50(Key k) const;
// Data members
Piece board[SQUARE_NB];
}
inline Key Position::key() const {
- return st->rule50 < 14 ? st->key
- : st->key ^ make_key((st->rule50 - 14) / 8);
+ return adjust_key50<false>(st->key);
+}
+
+template<bool AfterMove>
+inline Key Position::adjust_key50(Key k) const
+{
+ return st->rule50 < 14 - AfterMove
+ ? k : k ^ make_key((st->rule50 - (14 - AfterMove)) / 8);
}
inline Key Position::pawn_key() const {
return psq;
}
+inline Value Position::psq_eg_stm() const {
+ return (sideToMove == WHITE ? 1 : -1) * eg_value(psq);
+}
+
inline Value Position::non_pawn_material(Color c) const {
return st->nonPawnMaterial[c];
}