Opened 6 years ago
Closed 5 years ago
#14890 closed defect (wontfix)
rounding in logs
Reported by: | amy | Owned by: | AlexGhitza |
---|---|---|---|
Priority: | minor | Milestone: | sage-duplicate/invalid/wontfix |
Component: | basic arithmetic | Keywords: | logarithm mpfr rounding |
Cc: | Merged in: | ||
Authors: | Reviewers: | Jeroen Demeyer | |
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description (last modified by )
Logarithms are not rounded correctly:
sage: (3.0^5).log(3.0) - 5.0 -8.88178419700125e-16
Change History (8)
comment:1 Changed 6 years ago by
comment:2 Changed 5 years ago by
- Milestone changed from sage-6.1 to sage-6.2
comment:3 Changed 5 years ago by
- Milestone changed from sage-6.2 to sage-6.3
comment:4 Changed 5 years ago by
- Component changed from calculus to basic arithmetic
- Description modified (diff)
- Keywords logarithm mpfr rounding added; logarithms removed
- Owner changed from burcin to AlexGhitza
comment:5 Changed 5 years ago by
- Milestone changed from sage-6.3 to sage-6.4
comment:6 Changed 5 years ago by
- Milestone changed from sage-6.4 to sage-duplicate/invalid/wontfix
- Reviewers set to Jeroen Demeyer
- Status changed from new to needs_review
Sage is not the place to implement this. If you really need this, it should be implemented in MPFR, then Sage can interface it.
Close as "wontfix".
comment:7 Changed 5 years ago by
- Status changed from needs_review to positive_review
comment:8 Changed 5 years ago by
- Resolution set to wontfix
- Status changed from positive_review to closed
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author is for the author of the patch :) This is probably typical floating point stuff, not sure how easy it would be to fix.