Opened 7 years ago
Closed 5 years ago
#16724 closed defect (wontfix)
simplify_rational() takes very long or forever for some complex exponential expressions
Reported by: | gansmann | Owned by: | |
---|---|---|---|
Priority: | major | Milestone: | sage-duplicate/invalid/wontfix |
Component: | symbolics | Keywords: | simplify symbolics exponentials |
Cc: | Merged in: | ||
Authors: | Reviewers: | ||
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description
For some sums of exponential functions with complex arguments, simplify_rational()
takes very long or is caught in an infinite loop (it did not finish in 40 minutes).
(e^(8/5*I*pi) + e^(4/5*I*pi)).simplify_rational()
Change History (4)
comment:1 Changed 7 years ago by
- Milestone changed from sage-6.3 to sage-6.4
comment:2 Changed 5 years ago by
- Milestone changed from sage-6.4 to sage-duplicate/invalid/wontfix
- Status changed from new to needs_review
comment:3 Changed 5 years ago by
- Status changed from needs_review to positive_review
Tested here too.
comment:4 Changed 5 years ago by
- Resolution set to wontfix
- Status changed from positive_review to closed
Determined to be invalid/duplicate/wontfix (closing as "wontfix" as a catch-all resolution).
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This is no longer the case because Pynac automatically expands many trigonometric expressions with rational multiples of
pi
, before the expression is handed to Maxima.