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Micro-optimize castling handling in do_move()

Browse Source 
And better self-document the code.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2011-06-11 12:41:20 +01:00
parent 735cac5d53
commit b21a5e2f06
4 changed files with 35 additions and 36 deletions
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32
src/position.h
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@@ -257,8 +257,8 @@ private:
void clear();
void detach();
void put_piece(Piece p, Square s);
void do_allow_oo(Color c);
void do_allow_ooo(Color c);
void set_castle_kingside(Color c);
void set_castle_queenside(Color c);
bool set_castling_rights(char token);
bool move_is_pl_slow(const Move m) const;
@@ -406,16 +406,24 @@ inline Square Position::king_square(Color c) const {
return pieceList[c][KING][0];
}
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 side) const {
return st->castleRights & (4+4*int(side));
inline bool Position::can_castle_queenside(Color c) const {
return st->castleRights & (WHITE_OOO << c);
}
inline bool Position::can_castle(Color side) const {
return can_castle_kingside(side) || can_castle_queenside(side);
inline bool Position::can_castle(Color c) const {
return st->castleRights & ((WHITE_OO | WHITE_OOO) << c);
}
inline void Position::set_castle_kingside(Color c) {
st->castleRights |= (WHITE_OO << c);
}
inline void Position::set_castle_queenside(Color c) {
st->castleRights |= (WHITE_OOO << c);
}
inline Square Position::initial_kr_square(Color c) const {
@@ -542,12 +550,4 @@ inline int Position::thread() const {
return threadID;
}
inline void Position::do_allow_oo(Color c) {
st->castleRights |= (1 + int(c));
}
inline void Position::do_allow_ooo(Color c) {
st->castleRights |= (4 + 4*int(c));
}
#endif // !defined(POSITION_H_INCLUDED)