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Merged
codedeliveryservice merged 1 commit into from
Jun 4, 2026
Merged

Faster is_noisy. #1069

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13 changes: 3 additions & 10 deletions src/types/moves.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -65,17 +65,10 @@ impl Move {
self.is_present() && !self.is_noisy()
}

// Sneaky bit-twidling. If we just look at the last 3 bits (& 7), anything
// greater than Castling is a queen push promotion or a capture.
pub const fn is_noisy(self) -> bool {
matches!(
self.kind(),
MoveKind::Capture
| MoveKind::EnPassant
| MoveKind::PromotionQ
| MoveKind::PromotionCaptureN
| MoveKind::PromotionCaptureB
| MoveKind::PromotionCaptureR
| MoveKind::PromotionCaptureQ
)
(self.kind() as u8 & 7) > MoveKind::Castling as u8
}

pub const fn is_special(self) -> bool {
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