#13207: Please consider updating to gfan 0.5
-----------------------------+----------------------------------------------
Reporter: pcpa | Owner: tbd
Type: enhancement | Status: new
Priority: minor | Milestone: sage-5.2
Component: PLEASE CHANGE | Keywords:
Work issues: | Report Upstream: N/A
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
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As far as I checked, the sagemath gfan spkg patches are already applied to
gfan 0.5.
I made a few changes to the package in a RFE (request for enhancement) to
the gfan 0.5 fedora package at
https://bugzilla.redhat.com/show_bug.cgi?id=837857. Most noticeable one
should be that I added a gfan-permissive.patch to make it work if called
as `gfan` instead of erroring out and telling to call it `gfan_bases`. But
it could be changed to be called as 'gfan_bases' in
`sage/interfaces/gfan.py`.
The major issue I noticed is that, the first previous doctest failure due
to it wanting to be called `gfan_bases` now gives a different result in
one of the tests:
{{{
$ sage -t -force_lib "devel/doc/en/tutorial/tour_advanced.rst"
sage -t -force_lib "devel/doc/en/tutorial/tour_advanced.rst"
**********************************************************************
File "/usr/share/sagemath/devel/doc/en/tutorial/tour_advanced.rst", line
66:
sage: F.reduced_groebner_bases ()
Expected:
[[-c^2 + b*d, -b*c + a*d, -b^2 + a*c],
[c^2 - b*d, -b*c + a*d, -b^2 + a*c],
[c^2 - b*d, b*c - a*d, -b^2 + a*c, -b^3 + a^2*d],
[c^2 - b*d, b*c - a*d, b^3 - a^2*d, -b^2 + a*c],
[c^2 - b*d, b*c - a*d, b^2 - a*c],
[-c^2 + b*d, b^2 - a*c, -b*c + a*d],
[-c^2 + b*d, b*c - a*d, b^2 - a*c, -c^3 + a*d^2],
[c^3 - a*d^2, -c^2 + b*d, b*c - a*d, b^2 - a*c]]
Got:
[[-c^2 + b*d, -b*c + a*d, -b^2 + a*c], [-c^2 + b*d, b^2 - a*c, -b*c +
a*d], [-c^2 + b*d, b*c - a*d, b^2 - a*c, -c^3 + a*d^2], [c^3 - a*d^2, -c^2
+ b*d, b*c - a*d, b^2 - a*c], [c^2 - b*d, -b*c + a*d, -b^2 + a*c], [c^2 -
b*d, b*c - a*d, -b^2 + a*c, -b^3 + a^2*d], [c^2 - b*d, b*c - a*d, b^3 -
a^2*d, -b^2 + a*c], [c^2 - b*d, b*c - a*d, b^2 - a*c]]
**********************************************************************
1 items had failures:
1 of 8 in __main__.example_1
***Test Failed*** 1 failures.
For whitespace errors, see the file
/home/pcpa/.sage//tmp/tour_advanced_19053.py
[5.8 s]
----------------------------------------------------------------------
The following tests failed:
sage -t -force_lib "devel/doc/en/tutorial/tour_advanced.rst"
Total time for all tests: 5.8 seconds
}}}
For easier noticing the different result, the diff is:
{{{
$ diff -u ~/{old,new}
--- /home/pcpa/old 2012-07-05 12:27:50.823418301 -0400
+++ /home/pcpa/new 2012-07-05 12:27:56.591418588 -0400
@@ -1,8 +1,8 @@
[[-c^2 + b*d, -b*c + a*d, -b^2 + a*c],
+ [-c^2 + b*d, b^2 - a*c, -b*c + a*d],
+ [-c^2 + b*d, b*c - a*d, b^2 - a*c, -c^3 + a*d^2],
+ [c^3 - a*d^2, -c^2 + b*d, b*c - a*d, b^2 - a*c],
[c^2 - b*d, -b*c + a*d, -b^2 + a*c],
[c^2 - b*d, b*c - a*d, -b^2 + a*c, -b^3 + a^2*d],
[c^2 - b*d, b*c - a*d, b^3 - a^2*d, -b^2 + a*c],
- [c^2 - b*d, b*c - a*d, b^2 - a*c],
- [-c^2 + b*d, b^2 - a*c, -b*c + a*d],
- [-c^2 + b*d, b*c - a*d, b^2 - a*c, -c^3 + a*d^2],
- [c^3 - a*d^2, -c^2 + b*d, b*c - a*d, b^2 - a*c]]
+ [c^2 - b*d, b*c - a*d, b^2 - a*c]]
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13207>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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