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Use Hacker's Delight impl in i64::midpoint instead of wide i128 impl

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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
This commit is contained in:
Urgau 2024-10-27 20:34:13 +01:00
parent 9fa0146c4a
commit ad80da6729
1 changed files with 2 additions and 2 deletions
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4
library/core/src/num/mod.rs
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@ -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.