#4000: Implement QQ['x'] via Flint ZZ['x'] + denominator
------------------------------+---------------------------------------------
Reporter: malb | Owner: somebody
Type: enhancement | Status: new
Priority: major | Milestone: sage-4.6
Component: basic arithmetic | Resolution:
Keywords: | Author: Sebastian Pancratz, Martin
Albrecht
Upstream: N/A | Reviewer: John Cremona, Martin Albrecht,
Alex Ghitza, Harald Schilly
Merged: sage-4.6.alpha1 | Work_issues:
------------------------------+---------------------------------------------
Comment(by mpatel):
I get this error on sage.math and several other Sage cluster and Skynet
machines on which 4.6.alpha1 builds successfully:
{{{
sage -t -long
devel/sage/sage/rings/polynomial/polynomial_rational_flint.pyx
**********************************************************************
File "/mnt/usb1/scratch/mpatel/tmp/sage-4.6.alpha1/devel/sage-
main/sage/rings/polynomial/polynomial_rational_flint.pyx", line 1549:
sage: R((x-1)*(x+1)).hensel_lift(7, 2)
Exception raised:
Traceback (most recent call last):
File
"/mnt/usb1/scratch/mpatel/tmp/sage-4.6.alpha1/local/bin/ncadoctest.py",
line 1231, in run_one_test
self.run_one_example(test, example, filename, compileflags)
File
"/mnt/usb1/scratch/mpatel/tmp/sage-4.6.alpha1/local/bin/sagedoctest.py",
line 38, in run_one_example
OrigDocTestRunner.run_one_example(self, test, example, filename,
compileflags)
File
"/mnt/usb1/scratch/mpatel/tmp/sage-4.6.alpha1/local/bin/ncadoctest.py",
line 1172, in run_one_example
compileflags, 1) in test.globs
File "<doctest __main__.example_44[3]>", line 1, in <module>
R((x-Integer(1))*(x+Integer(1))).hensel_lift(Integer(7),
Integer(2))###line 1549:
sage: R((x-1)*(x+1)).hensel_lift(7, 2)
File "polynomial_rational_flint.pyx", line 1588, in
sage.rings.polynomial.polynomial_rational_flint.Polynomial_rational_flint.hensel_lift
(sage/rings/polynomial/polynomial_rational_flint.cpp:12625)
H = self._pari_().polhensellift(y, p, e)
File "gen.pyx", line 9460, in sage.libs.pari.gen._pari_trap
(sage/libs/pari/gen.c:45047)
PariError: (5)
}}}
Is this easy to fix?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4000#comment:86>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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