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| author | eug-vs <eugene@eug-vs.xyz> | 2023-01-21 18:24:52 +0300 |
|---|---|---|
| committer | eug-vs <eugene@eug-vs.xyz> | 2023-01-21 18:26:07 +0300 |
| commit | 74973416aa6a7b0fae9ed2b9911fa18fe87c4e1c (patch) | |
| tree | 0f76f0604177e8412638de88f3c2481bf429cd50 /src/bitboard.rs | |
| parent | 56f80a81852ef9fa6c1654c8548751fb898f2fb3 (diff) | |
| download | chessnost-74973416aa6a7b0fae9ed2b9911fa18fe87c4e1c.tar.gz | |
feat: precompute first rank attacks
Diffstat (limited to 'src/bitboard.rs')
| -rw-r--r-- | src/bitboard.rs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/bitboard.rs b/src/bitboard.rs index 6481863..646006c 100644 --- a/src/bitboard.rs +++ b/src/bitboard.rs @@ -24,6 +24,9 @@ pub fn pop_count(bb: Bitboard) -> u8 { /// Return Bitboard with only Least Single Bit pub fn ls1b(bb: Bitboard) -> u64 { + if bb == 0 { + return 0 + } bb & !(bb - 1) } |