#17088: PeriodicRegion.__div__: use integer arithmetic
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Reporter: jdemeyer | Owner:
Type: defect | Status: new
Priority: critical | Milestone: sage-6.4
Component: elliptic curves | Resolution:
Keywords: | Merged in:
Authors: Jeroen Demeyer | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/jdemeyer/ticket/17088 | 15b7588e82c7d67bbbab14fec4c14c862bcc4c1f
Dependencies: | Stopgaps:
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Comment (by jdemeyer):
Replying to [comment:7 cremona]:
> At the moment I cannot see how the new code manages to do in one line
what the old code took 4 lines to do, but Jeroen is very clever so I will
look again.
Part of the problem with the old code is that it's not clear what it is
supposed to do.
Anyway, I claim the following: if you assume that all the floating point
operations are exact, the 4 lines all do exactly the same so they can
easily be replaced by 1 line. I guess the addition of the 3 extra lines
was simply to hide floating-point rounding errors.
--
Ticket URL: <http://trac.sagemath.org/ticket/17088#comment:8>
Sage <http://www.sagemath.org>
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