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Unify capture and promotion tests

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Small code cleanup and a bit faster too.

The only functional change is that in extension
in pv node we extend promotions and not only captures
when condition met.

This is practically an undetectable change and has
no impact on strenght.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2009-10-21 11:41:24 +01:00
parent a72c55283d
commit b50921fd5c
2 changed files with 33 additions and 45 deletions
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8
src/position.h
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@@ -207,6 +207,7 @@ public:
bool move_is_check(Move m) const;
bool move_is_check(Move m, Bitboard dcCandidates) const;
bool move_is_capture(Move m) const;
bool move_is_capture_or_promotion(Move m) const;
bool move_is_passed_pawn_push(Move m) const;
bool move_attacks_square(Move m, Square s) const;
@@ -568,8 +569,13 @@ inline bool Position::has_pawn_on_7th(Color c) const {
inline bool Position::move_is_capture(Move m) const {
// Move must not be MOVE_NONE !
return (m & (3 << 15)) ? !move_is_castle(m) : !square_is_empty(move_to(m));
}
return (!square_is_empty(move_to(m)) && !move_is_castle(m)) || move_is_ep(m);
inline bool Position::move_is_capture_or_promotion(Move m) const {
// Move must not be MOVE_NONE !
return (m & (0x1F << 12)) ? !move_is_castle(m) : !square_is_empty(move_to(m));
}
#endif // !defined(POSITION_H_INCLUDED)