Opened 3 years ago
Closed 3 years ago
#25252 closed defect (fixed)
Doctest: Complex arithmetic/exponentiation hang (or very slow)
Reported by:  ghaerusso  Owned by:  

Priority:  major  Milestone:  sage8.3 
Component:  algebra  Keywords:  days94 
Cc:  rws  Merged in:  
Authors:  Ralf Stephan  Reviewers:  Travis Scrimshaw 
Report Upstream:  N/A  Work issues:  
Branch:  8b25b1c (Commits, GitHub, GitLab)  Commit:  8b25b1c5f7e1ec2587afc752d98b4beefea16f64 
Dependencies:  #24838, #25251  Stopgaps: 
Description
Debian unstable (either downloaded directly or from the Debian repositories), running 8.1. Trying to multiply
(1+exp(i*pi/4))*exp(i*pi/4)
does not terminate (in a reasonable amount of time)
exp(i*pi/4)+exp(i*pi/4)*exp(i*pi/4)
on the other hand, resolves fine.
Sorry if this is a duplicate bug.
Change History (8)
comment:1 Changed 3 years ago by
comment:2 Changed 3 years ago by
 Cc rws added
comment:3 Changed 3 years ago by
 Dependencies set to #24838
comment:4 Changed 3 years ago by
 Branch set to u/rws/25252
comment:5 Changed 3 years ago by
 Commit set to ee8bff4575686c5024b889884e1d5a2de5b91b46
 Dependencies changed from #24838 to #24838, #25251
 Milestone changed from sage8.2 to sage8.3
 Status changed from new to needs_review
 Summary changed from Complex arithmetic/exponentiation hang (or very slow) to Doctest: Complex arithmetic/exponentiation hang (or very slow)
comment:6 Changed 3 years ago by
 Commit changed from ee8bff4575686c5024b889884e1d5a2de5b91b46 to 8b25b1c5f7e1ec2587afc752d98b4beefea16f64
Branch pushed to git repo; I updated commit sha1. This was a forced push. New commits:
8b25b1c  25252: doctest

comment:7 Changed 3 years ago by
 Keywords days94 added
 Reviewers set to Travis Scrimshaw
 Status changed from needs_review to positive_review
LGTM.
comment:8 Changed 3 years ago by
 Branch changed from u/rws/25252 to 8b25b1c5f7e1ec2587afc752d98b4beefea16f64
 Resolution set to fixed
 Status changed from positive_review to closed
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It's OK in Sage 8.1.beta5 and all previous versions of Sage:
It hangs in Sage 8.1.beta8. So the bug was introduced between Sage 8.1.beta6 and 8.1.beta8.