#20781: Cannot interrupt integral_points() of polyhedron
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Reporter: tscrim | Owner: tscrim
Type: defect | Status: new
Priority: major | Milestone: sage-7.3
Component: cython | Resolution:
Keywords: | Merged in:
Authors: Jeroen Demeyer | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Changes (by {'newvalue': u'Jeroen Demeyer', 'oldvalue': ''}):
* component: geometry => cython
* author: => Jeroen Demeyer
Old description:
> We currently cannot ctrl-C interrupt the `integral_points()` of a
> polyhedron:
> {{{
> sage: ieqs = [(-1, -1, -1, -1, -1, -1, -1, -1, -1),
> ....: (0, -1, 0, 0, 0, 0, 0, 0, 0),
> ....: (0, -1, 0, 2, -1, 0, 0, 0, 0),
> ....: (0, 0, -1, -1, 2, -1, 0, 0, 0),
> ....: (0, 2, 0, -1, 0, 0, 0, 0, 0),
> ....: (0, 0, 0, 0, 0, 0, 0, -1, 2),
> ....: (1, 0, 2, 0, -1, 0, 0, 0, 0),
> ....: (0, 0, 0, 0, -1, 2, -1, 0, 0),
> ....: (0, 0, 0, 0, 0, 0, 0, 0, -1),
> ....: (0, 0, 0, 0, 0, -1, 2, -1, 0),
> ....: (0, 0, 0, 0, 0, 0, -1, 2, -1)]
> sage: P = Polyhedron(ieqs=ieqs)
> sage: P
> A 8-dimensional polyhedron in QQ^8 defined as the convex hull of 43
> vertices
> sage: P.integral_points() # Cannot ctrl-C out of this
> }}}
> Likely a `sig_on` and `sig_off` pair is needed around the call to
> `sage.geometry.integral_points.loop_over_rectangular_box_points`.
New description:
We currently cannot ctrl-C interrupt the `integral_points()` of a
polyhedron:
{{{
sage: ieqs = [(-1, -1, -1, -1, -1, -1, -1, -1, -1),
....: (0, -1, 0, 0, 0, 0, 0, 0, 0),
....: (0, -1, 0, 2, -1, 0, 0, 0, 0),
....: (0, 0, -1, -1, 2, -1, 0, 0, 0),
....: (0, 2, 0, -1, 0, 0, 0, 0, 0),
....: (0, 0, 0, 0, 0, 0, 0, -1, 2),
....: (1, 0, 2, 0, -1, 0, 0, 0, 0),
....: (0, 0, 0, 0, -1, 2, -1, 0, 0),
....: (0, 0, 0, 0, 0, 0, 0, 0, -1),
....: (0, 0, 0, 0, 0, -1, 2, -1, 0),
....: (0, 0, 0, 0, 0, 0, -1, 2, -1)]
sage: P = Polyhedron(ieqs=ieqs)
sage: P
A 8-dimensional polyhedron in QQ^8 defined as the convex hull of 43
vertices
sage: P.integral_points() # Cannot ctrl-C out of this
}}}
Likely some `sig_check()` calls are needed.
--
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Ticket URL: <http://trac.sagemath.org/ticket/20781#comment:2>
Sage <http://www.sagemath.org>
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