#17088: PeriodicRegion.__div__: use integer arithmetic
-------------------------------+----------------------------
Reporter: jdemeyer | Owner:
Type: defect | Status: new
Priority: critical | Milestone: sage-6.4
Component: elliptic curves | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
-------------------------------+----------------------------
Replace the unreliable floating-point arithmetic in
`PeriodicRegion.__div__` by pure integer arithmetic.
Background:
this is causing doctest failures in #16938 due to slightly different
floating-point rounding. The failure is the following:
{{{
sage -t src/sage/schemes/elliptic_curves/period_lattice_region.pyx
**********************************************************************
File "src/sage/schemes/elliptic_curves/period_lattice_region.pyx", line
395, in
sage.schemes.elliptic_curves.period_lattice_region.PeriodicRegion.__div__
Failed example:
(S / 3).plot()
Expected:
Graphics object consisting of 109 graphics primitives
Got:
Graphics object consisting of 121 graphics primitives
**********************************************************************
}}}
(this output of `plot()` commands was added by #16746). As you can see,
there are more pixels in the debug version.
--
Ticket URL: <http://trac.sagemath.org/ticket/17088>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/d/optout.
