Opened 9 years ago
Closed 6 years ago
#10062 closed defect (fixed)
With imag, sqrt and subs I get 0==1
Reported by: | fmaltey | Owned by: | burcin |
---|---|---|---|
Priority: | major | Milestone: | sage-5.11 |
Component: | calculus | Keywords: | |
Cc: | kcrisman | Merged in: | sage-5.11.beta0 |
Authors: | Burcin Erocal | Reviewers: | Travis Scrimshaw |
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description (last modified by )
I use Sage 4.5.3
var('m') ; y=sqrt(m^2-1) y(m=0) # =I, is right imag(y) # =.... feels right, arctan2(0,-1)=pi when m=0 imag(y(m=0)) # =1, is right (imag(y))(m=0) # is 0 and I don't understand why !
Attachments (1)
Change History (9)
comment:1 Changed 9 years ago by
- Milestone set to sage-4.6.1
- Status changed from new to needs_review
comment:2 Changed 9 years ago by
Did you mean to check if #10064 was fixed?
comment:3 Changed 9 years ago by
I think putting 10062 in the patch is ok.
comment:4 Changed 8 years ago by
- Cc kcrisman added
comment:5 Changed 8 years ago by
- Status changed from needs_review to needs_info
Putting as 'needs info' until #10064 is resolved.
Changed 6 years ago by
comment:6 Changed 6 years ago by
- Description modified (diff)
- Milestone changed from sage-5.10 to sage-5.11
- Status changed from needs_info to needs_review
comment:7 Changed 6 years ago by
- Reviewers set to Travis Scrimshaw
- Status changed from needs_review to positive_review
Looks good to me.
comment:8 Changed 6 years ago by
- Merged in set to sage-5.11.beta0
- Resolution set to fixed
- Status changed from positive_review to closed
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This was caused by the problem reported at #10064. The
arctan2()
automatic evaluation function checks if the second argument is positive, line 1062 ofinifcns_trans.cpp
in pynac:attachment:trac_10062-doctest.patch adds a doctest to check this.