#9926: Doctest error in sage/schemes/generic/toric_divisor.py on OS X
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Reporter: mpatel | Owner: mvngu
Type: defect | Status: new
Priority: blocker | Milestone: sage-4.6
Component: doctest | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by vbraun):
I think the problem is that `cddlib` uses `rand()` to sometimes make
random initial choices while searching for generating sets. Although
`cddlib` fixes the seed, there is no guarantee that different platforms
implement `rand()` in the same way.
To make sure this is indeed the problem, can you run
{{{
sage: Polyhedron(vertices=[(0, 1), (1, 1), (0, 1), (-1, 1), (0, 2), (0,
-1), (0, 0), (0, 0), (3, -1), (0, 2), (0, -1), (1, -1), (0, 0)],
verbose=True)
V-representation
begin
13 3 rational
1 0 1
1 1 1
1 0 1
1 -1 1
1 0 2
1 0 -1
1 0 0
1 0 0
1 3 -1
1 0 2
1 0 -1
1 1 -1
1 0 0
end
V-representation
begin
4 3 rational
1 -1 1
1 0 2
1 0 -1
1 3 -1
end
H-representation
begin
4 3 rational
2 1 -1
1 2 1
1 0 1
2 -1 -1
end
A 2-dimensional polyhedron in QQ^2 defined as the convex hull of 4
vertices.
}}}
on the OSX machine and paste the output? I can then rip out the `rand()`
from the `cddlib.spkg`...
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9926#comment:9>
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