These appear to be consistent with the pow implementation in ieee754.cc.

Bug: v8:11371
Change-Id: I1b695facb5ba7dc1a7bd28914bdb535966e080c7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2710432
Auto-Submit: Georg Neis <neis@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72922}