#10590: Saturation of elliptic curve points can cause an infinite loop
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Reporter: cremona | Owner: cremona
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.6.2
Component: elliptic curves | Keywords: saturation
Author: John Cremona | Upstream: N/A
Reviewer: Robert Miller | Merged:
Work_issues: |
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Changes (by cremona):
* status: positive_review => needs_work
Comment:
The new patch only differs from the first one in (new) lines 2115-2118 of
ell_rational_field.py, in the saturation() method: before, if the current
precision was > 100 then the initial working precision was actually
reduced to 100, which is silly. Now, if the user has "manually" increased
precision already, that is used as the starting point.
I discovered this with an example where precision of 300 was needed (250
was too small).
I am switching this to "needs work" and then right away back to "needs
review".
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10590#comment:3>
Sage <http://www.sagemath.org>
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