Opened 10 years ago
Closed 10 years ago
#13587 closed defect (fixed)
automatic simplification can lose some infinities
Reported by: | Burcin Erocal | Owned by: | Burcin Erocal |
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Priority: | critical | Milestone: | sage-5.9 |
Component: | symbolics | Keywords: | pynac arithmetic |
Cc: | Karl-Dieter Crisman | Merged in: | sage-5.9.beta1 |
Authors: | Burcin Erocal | Reviewers: | Jean-Pierre Flori |
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | #13729 | Stopgaps: |
Description
From this ask.sagemath.org question:
sage: t = tan(x)^2 - tan(x) sage: t.subs(x=pi/2) 0 sage: u = gamma(x) - gamma(x-1) sage: u.subs(x=-1) 0
Attachments (1)
Change History (8)
comment:1 Changed 10 years ago by
Cc: | Karl-Dieter Crisman added |
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Changed 10 years ago by
Attachment: | trac_13587-infinity_doctest.patch added |
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comment:2 Changed 10 years ago by
comment:3 Changed 10 years ago by
Authors: | → Burcin Erocal |
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Dependencies: | → #13729 |
Keywords: | arithmetic added |
Status: | new → needs_review |
Pynac 0.2.6 contains a fix for this. Updating the spkg is #13729.
comment:4 Changed 10 years ago by
Reviewers: | → Jean-Pierre Flori |
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Status: | needs_review → positive_review |
The added doctest tests what it should and passes with updated Pynac, so positive review.
comment:5 Changed 10 years ago by
Milestone: | sage-5.5 → sage-pending |
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comment:6 Changed 10 years ago by
Milestone: | sage-pending → sage-5.9 |
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comment:7 Changed 10 years ago by
Merged in: | → sage-5.9.beta1 |
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Resolution: | → fixed |
Status: | positive_review → closed |
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This is now Pynac issue #14. It will be fixed in the next Pynac release.