#4064: [with patch] pari precision issues
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Reporter: AlexGhitza | Owner: was
Type: defect | Status: new
Priority: major | Milestone: sage-3.1.2
Component: interfaces | Resolution:
Keywords: |
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Comment (by cremona):
I successfully applied the whole sequence of patches ending with
4064-ell_pari_precision.patch to fresh 3.1.2.alpha4 builds on two
machines, a 32-bit and a 64-bit.
Testing all of sage.schemes.elliptic_curves, the only failure on 32-bit
was (as Alex reported) in ell_number_field.py:
{{{
File "/home/jec/sage-current/tmp/ell_number_field.py", line 1133:
sage: L.basis(prec=10)
Expected:
(4.1310718527050167743096955262475367...,
-2.0655359263525083871548477631237683... +
0.98863042446910777236901069433960633...*I)
Got:
(4.13107185270501677, -2.06553592635250838 + 0.988630424469107772*I)
}}}
On the 64-bit I also had stuff in period_lattice.py and in
ell_rational_field.py this:
{{{
File "/home/jec/sage-current/tmp/ell_rational_field.py", line 448:
sage: [a.precision() for a in E]
Expected:
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 4]
Got:
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 3, 3, 3, 3]
}}}
This is just on account of differing behaviour on 64-bit machines which
Alex had not tested, so I'll edit the doctests accorsingly and come back
with an additional patch.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4064#comment:6>
SAGE <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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