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maths/radix2_fft.py: Fix calculation for Python 3.14 #12772

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Merged
merged 4 commits into from
May 29, 2025

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@cclauss cclauss commented May 28, 2025

Fixes: #12729

As suggested at:

@MaximSmolskiy @KirilBangachev @skirpichev Careful review, please. I am just implementing the suggestion, but I do not have any expertise in this area.

Describe your change:

  • Add an algorithm?
  • Fix a bug or typo in an existing algorithm?
  • Add or change doctests? -- Note: Please avoid changing both code and tests in a single pull request.
  • Documentation change?

Checklist:

  • I have read CONTRIBUTING.md.
  • This pull request is all my own work -- I have not plagiarized.
  • I know that pull requests will not be merged if they fail the automated tests.
  • This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
  • All new Python files are placed inside an existing directory.
  • All filenames are in all lowercase characters with no spaces or dashes.
  • All functions and variable names follow Python naming conventions.
  • All function parameters and return values are annotated with Python type hints.
  • All functions have doctests that pass the automated testing.
  • All new algorithms include at least one URL that points to Wikipedia or another similar explanation.
  • If this pull request resolves one or more open issues then the description above includes the issue number(s) with a closing keyword: "Fixes #ISSUE-NUMBER".

As suggested at:
* #12729 (comment)
* #12710 (comment)

@MaximSmolskiy @KirilBangachev @skirpichev Careful review, please.  I am just implementing the suggestion, but I do not have any expertise in this area.
@cclauss cclauss requested a review from MaximSmolskiy May 28, 2025 17:39
@algorithms-keeper algorithms-keeper bot added awaiting reviews This PR is ready to be reviewed tests are failing Do not merge until tests pass labels May 28, 2025
@algorithms-keeper algorithms-keeper bot removed tests are failing Do not merge until tests pass labels May 28, 2025
It is confusing to have two jobs named `build`.
@@ -3,7 +3,7 @@
name: directory_writer
on: [push]
jobs:
build:
directory_writer:
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@cclauss cclauss May 28, 2025

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It is too confusing to have two GitHub Actions jobs named build, so rename this job to document what it really does.

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I have a basic knowledge of complex numbers from university course. For me, the changes are equivalent. So, the difference lies somewhere deep in the subtleties of practical implementation, which I don't know at all

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cclauss commented May 29, 2025

Nice teamwork on this one. Thanks much!

@cclauss cclauss merged commit d0d7f0b into master May 29, 2025
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@cclauss cclauss deleted the maths/radix2_fft.py-on-Python-3.14 branch May 29, 2025 06:56
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Help wanted: Why do maths/radix2_fft.py test results change on Python 3.14 beta?
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