Opened 6 months ago
Closed 6 months ago
#27909 closed enhancement (fixed)
py3: fix a doctest in binary_form_reduce
| Reported by: | gh-mwageringel | Owned by: | |
|---|---|---|---|
| Priority: | major | Milestone: | sage-8.8 |
| Component: | python3 | Keywords: | |
| Cc: | bhutz | Merged in: | |
| Authors: | Markus Wageringel | Reviewers: | Ben Hutz |
| Report Upstream: | N/A | Work issues: | |
| Branch: | 569bf72 (Commits) | Commit: | 569bf72103cc6678f4004f27d0210ceac178e437 |
| Dependencies: | Stopgaps: |
Description
This ticket fixes a Python 3 doctest failure in smallest_poly() in sage.rings.polynomial.binary_form_reduce.
In Python 3, the result of the function differs due to tiny floating point inaccuracies. I checked that the value that is minimized inside the function is the same in Python 2 and 3 (up to small tolerance), so apparently the result of the computation is not unique. In order to stay consistent between Python versions, I replaced the doctest by a test that checks the properties of the result instead of the result itself.
What I am not sure about: Does smallest_poly() return the polynomial for which get_bound_poly() attains its minimum? If so, perhaps this could be clarified in the documentation.
Change History (5)
comment:1 Changed 6 months ago by
- Branch set to u/gh-mwageringel/27909
- Commit set to 6e576523aaf203e417612cb057249ff1a33d36b0
- Status changed from new to needs_review
comment:2 Changed 6 months ago by
- Cc bhutz added
comment:3 Changed 6 months ago by
- Commit changed from 6e576523aaf203e417612cb057249ff1a33d36b0 to 569bf72103cc6678f4004f27d0210ceac178e437
Branch pushed to git repo; I updated commit sha1. New commits:
| 569bf72 | fix pyflakes in binary_form_reduce
|
comment:4 Changed 6 months ago by
- Reviewers set to Ben Hutz
- Status changed from needs_review to positive_review
This looks fine to me. The deletions all seem to be unused items that were missed when the original code was checked in.
comment:5 Changed 6 months ago by
- Branch changed from u/gh-mwageringel/27909 to 569bf72103cc6678f4004f27d0210ceac178e437
- Resolution set to fixed
- Status changed from positive_review to closed
New commits:
Trac #27909: py3: fix doctest in smallest_poly()