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| author | Urgau <urgau@numericable.fr> | 2024-10-27 20:34:13 +0100 |
|---|---|---|
| committer | Urgau <urgau@numericable.fr> | 2024-10-27 20:34:13 +0100 |
| commit | ad80da672915a89163838f9adbfe5b6e4c1e616e (patch) | |
| tree | bb1ed0d3c9d540653c7ec2ee792e17292215cd4e | |
| parent | 9fa0146c4a12ace3a23555b22797868a98128a37 (diff) | |
| download | rust-ad80da672915a89163838f9adbfe5b6e4c1e616e.tar.gz rust-ad80da672915a89163838f9adbfe5b6e4c1e616e.zip | |
Use Hacker's Delight impl in `i64::midpoint` instead of wide `i128` impl
As LLVM seems to be outperformed by the complexity of signed 128-bits number compared to our Hacker's Delight implementation.[^1] It doesn't seems like it's an improvement for the other sizes[^2], so we let them with the wide implementation. [^1]: https://rust.godbolt.org/z/ravE75EYj [^2]: https://rust.godbolt.org/z/fzr171zKh
| -rw-r--r-- | library/core/src/num/mod.rs | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/library/core/src/num/mod.rs b/library/core/src/num/mod.rs index 9a5e211dd60..6a0b40ff517 100644 --- a/library/core/src/num/mod.rs +++ b/library/core/src/num/mod.rs @@ -429,7 +429,7 @@ impl i64 { from_xe_bytes_doc = "", bound_condition = "", } - midpoint_impl! { i64, i128, signed } + midpoint_impl! { i64, signed } } impl i128 { @@ -530,7 +530,7 @@ impl isize { from_xe_bytes_doc = usize_isize_from_xe_bytes_doc!(), bound_condition = " on 64-bit targets", } - midpoint_impl! { isize, i128, signed } + midpoint_impl! { isize, signed } } /// If the 6th bit is set ascii is lower case. |