GH-100485: Add math.sumprod() - #100677

Merged

rhettinger merged 43 commits into

python:mainfrom

rhettinger:sumprod

Jan 7, 2023

Commits on Jan 1, 2023

Stub function.
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5776b0f
Core fuctionality without error handling
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8ffd49e

Commits on Jan 2, 2023

Test core functionality.
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f5a3ecb
Add docs
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37fcb0a
Check for non-iterable inputs
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6cfc5cc
Handle uneven lengths and error returns from PyIter_Next().
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fbeca6b
Handle errors arising during the multiplications or additions.
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40cfc8f
Test special values
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2ac24f5
Add blurb
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1a64fd8
Regenerate clinic files
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5f4e493

Commits on Jan 3, 2023

Beautify with booleans.
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31fa258
Add int_path. Needs work on refcount and addition overflow.
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d19a38b
Add more assertions and refcount fixes
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a28fd71
Only test for ints when iterators are not stopped.
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f998ee4
Test long addition for overflow
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94a9cbd
Improve wording regarding extended precision.
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c778865
Add the "finished" summary variable for readability.
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6d619dd

Commits on Jan 4, 2023

Add flt path
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83dbf96
add flt/int path
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c2e5f3d
.
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b8c9127
Merge branch 'sumprod4' into sumprod
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fdaf31b
Update docs and docstrings.
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4f22a7f
Fix typo
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7d7fd87
Use extended precision for float/float and int/float cases.
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c16f90a
Brevity is the soul of wit.
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c52bb84
Beautification.
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bf8059c

Commits on Jan 5, 2023

Various minor improvments
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1326e83
Fully encapsulate the dl (double length) logic.
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9b03468
Add performance comment.
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8b88f4d
Write tight.
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83ca929
Abbreviate comment.
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708f314
Remove case for int/int while float in use.
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90f1ee4
Beautify dl_add()
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02035dc
Add stress tests.
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9b1edcc
Update itertools recipe to reflect the promotion.
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22249d6
Remove doctest for dotproduct().
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ec50404

Commits on Jan 6, 2023

Commits on Jan 7, 2023

Use Dekker (5.12) directly. Avoids calling dl_add() and saves a comparison.
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67f82ca
Update timing in comment.
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5d165be
Add in the large component first.
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2e772cb