| commit | dd7ce26abf7cf431e7cecf6153fbb8730b1da686 | [log] [tgz] |
|---|---|---|
| author | eric fang <eric.fang@arm.com> | Wed Jun 29 03:09:54 2022 +0000 |
| committer | Eric Fang <eric.fang@arm.com> | Sat Oct 01 01:51:35 2022 +0000 |
| tree | 3d19f6d34887fe6538fe5852846abdcee3f1114b | |
| parent | 9a029a69157788d072147732fe2665c58bbbc02c [diff] |
math: optimize Hypot function This CL optimizes the Hypot function by putting the Abs function in front of the IsInf check. This simplifies the judgment of IsInf. Benchmarks: On linux/arm64, name old time/op new time/op delta Hypot-160 5.26ns ± 0% 4.53ns ± 0% -13.84% (p=0.000 n=4+5) HypotGo-160 5.19ns ± 0% 4.85ns ± 0% -6.53% (p=0.008 n=5+5) On linux/amd64, name old time/op new time/op delta Hypot-44 5.99ns ± 0% 5.99ns ± 0% ~ (p=0.667 n=5+5) HypotGo-44 7.46ns ± 0% 6.61ns ± 0% -11.37% (p=0.008 n=5+5) On darwin/arm64, name old time/op new time/op delta Hypot-8 3.58ns ± 0% 2.79ns ± 0% -22.01% (p=0.008 n=5+5) HypotGo-8 3.58ns ± 0% 2.79ns ± 0% -22.15% (p=0.008 n=5+5) Change-Id: Id79236e01d9494b6e00bbda3ec08c72caf5ef3c1 Reviewed-on: https://go-review.googlesource.com/c/go/+/414974 Reviewed-by: Cherry Mui <cherryyz@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Eric Fang <eric.fang@arm.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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