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bpo-41513: More accurate hypot()
- #21916
#21916
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Aug 25, 2020
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bpo-41513: More accurate hypot()
#21916
rhettinger
merged 12 commits into
python:master
python/cpython:master
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rhettinger:hypot_zero
rhettinger/cpython:hypot_zero
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Commits on Aug 18, 2020
First draft. Tests fail.
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Was squaring twice
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Divided by scale too early
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Fix order of application. Add more assertions
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Commits on Aug 23, 2020
Start to refine assertions
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The actual summation invariant is expressed in magnitudes
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Explain the algorithm in the comments. Provide references. Improve variable names.
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Add blurb
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Move the splitting constant into the function that uses it.
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Commits on Aug 24, 2020
Drop the requirement that input elements are non-negative.
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Update Modules/mathmodule.c
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Keep the summation order consistent between sections
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