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| author | Mazdak Farrokhzad <twingoow@gmail.com> | 2019-10-13 19:17:07 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-10-13 19:17:07 +0200 |
| commit | f0f5e779bc8f16406d7022e08da647d94cc30847 (patch) | |
| tree | 518ab649339ac7650ae014fb62e118d4d7db73ef | |
| parent | 2a9c79107696580c703d015ebc8aab008da82899 (diff) | |
| parent | 57aae75ce39de12f1af8d33d2836db59f7269ed2 (diff) | |
| download | rust-f0f5e779bc8f16406d7022e08da647d94cc30847.tar.gz rust-f0f5e779bc8f16406d7022e08da647d94cc30847.zip | |
Rollup merge of #65312 - tspiteri:signed-sat-mul, r=dtolnay
improve performance of signed saturating_mul Reciprocal throughput is improved from 2.3 to 1.7. https://godbolt.org/z/ROMiX6 Fixes #65309.
| -rw-r--r-- | src/libcore/num/mod.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs index ebde82de834..998c8f81652 100644 --- a/src/libcore/num/mod.rs +++ b/src/libcore/num/mod.rs @@ -1058,7 +1058,7 @@ $EndFeature, " #[inline] pub fn saturating_mul(self, rhs: Self) -> Self { self.checked_mul(rhs).unwrap_or_else(|| { - if (self < 0 && rhs < 0) || (self > 0 && rhs > 0) { + if (self < 0) == (rhs < 0) { Self::max_value() } else { Self::min_value() |