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Title: bpo-44376 - reduce pow() overhead for small exponents by tim-one · Pull Request #26662 · python/cpython · GitHub

Open Graph Title: bpo-44376 - reduce pow() overhead for small exponents by tim-one · Pull Request #26662 · python/cpython

X Title: bpo-44376 - reduce pow() overhead for small exponents by tim-one · Pull Request #26662 · python/cpython

Description: BPO-44376 Reduce pow() overhead for small exponents. Incidentally fixed a refcount oversight for negative exponents. https://bugs.python.org/issue44376

Open Graph Description: BPO-44376 Reduce pow() overhead for small exponents. Incidentally fixed a refcount oversight for negative exponents. https://bugs.python.org/issue44376

X Description: BPO-44376 Reduce pow() overhead for small exponents. Incidentally fixed a refcount oversight for negative exponents. https://bugs.python.org/issue44376

Opengraph URL: https://github.com/python/cpython/pull/26662

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9a2d559 First stab. tim-one Jun 11, 2021 https://github.com/python/cpython/pull/26662/commits/9a2d5590dbc3f51fdbb6abaaab56e2cdb7262c52
ff6e798 Repair that, e.g, pow(False, 1) returned False instead of 0. tim-one Jun 11, 2021 https://github.com/python/cpython/pull/26662/commits/ff6e798d741f531f10cda5dea4ff56380bf44c76
7f867fa Fixed typo in comment. tim-one Jun 11, 2021 https://github.com/python/cpython/pull/26662/commits/7f867fa078862e6de62c132dcac0e0efaf7f4dc8
e8c4034 Search for the most significant exponent bit right-to-left tim-one Jun 11, 2021 https://github.com/python/cpython/pull/26662/commits/e8c403485926e192bb4021d0ddf586e4ba0fc4fb
a3ace88 📜🤖 Added by blurb_it. blurb-it[bot] Jun 11, 2021 https://github.com/python/cpython/pull/26662/commits/a3ace88e5019dd4d56449fa971b505eef636f61a
735a887 Merge remote-tracking branch 'upstream/main' into powdig tim-one Jun 11, 2021 https://github.com/python/cpython/pull/26662/commits/735a887f2267e34c7b5a86c1f4d5b4cc166dc852
7587a02 Skip the binary business entirely for exponents <= 3. It can't win tim-one Jun 11, 2021 https://github.com/python/cpython/pull/26662/commits/7587a02540b0d6420625228c3d461bd58be6585a
2386d88 Make the bitmask variable of type `digit`. Using a giant signed int tim-one Jun 11, 2021 https://github.com/python/cpython/pull/26662/commits/2386d8833d9bfc6c1ce563b63fb7874c6fd2a4c8
c424322 And one more stab to reduce overhead for exponents <= 3. tim-one Jun 12, 2021 https://github.com/python/cpython/pull/26662/commits/c424322bf997d21a0a992623bdfa44f54985ec0c
e3cd20a Repaired typo in comment. tim-one Jun 12, 2021 https://github.com/python/cpython/pull/26662/commits/e3cd20a1a3cbca8dc259c3a6953fe3b8f386c122
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