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bitboard: use explicit bit representation

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This commit is contained in:
Simon Gardling 2025-02-19 20:18:38 -05:00
parent 76516a36dd
commit 8c5fea8359
Signed by: titaniumtown
GPG Key ID: 9AB28AC10ECE533D
1 changed files with 2 additions and 2 deletions
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src/bitboard.rs
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@ -45,14 +45,14 @@ impl BitBoard {
#[cfg(not(feature = "bitvec"))] #[cfg(not(feature = "bitvec"))]
pub const fn get(&self, row: usize, col: usize) -> bool { pub const fn get(&self, row: usize, col: usize) -> bool {
((self.0 >> Self::get_index(row, col)) & 1) != 0 ((self.0 >> Self::get_index(row, col)) & 0b1) != 0b0
} }
#[cfg(not(feature = "bitvec"))] #[cfg(not(feature = "bitvec"))]
pub const fn set(&mut self, row: usize, col: usize, value: bool) { pub const fn set(&mut self, row: usize, col: usize, value: bool) {
let index = Self::get_index(row, col); let index = Self::get_index(row, col);
// PERF! branchless setting of bit (~+3% perf bump) // PERF! branchless setting of bit (~+3% perf bump)
self.0 &= !(1 << index); // clear bit self.0 &= !(0b1 << index); // clear bit
self.0 |= (value as BitBoardInner) << index; // set bit (if needed) self.0 |= (value as BitBoardInner) << index; // set bit (if needed)
} }