#16773: Analytic Rank Bound
-------------------------------------+-------------------------------------
Reporter: spice | Owner: spice
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-6.8
Component: elliptic curves | Resolution:
Keywords: elliptic curves, | Merged in:
analytic rank, l-functions | Reviewers: William Stein
Authors: Simon Spicer | Work issues:
Report Upstream: N/A | Commit:
Branch: | 8ca05d1ad73c40eb744ab727ea9efd8d47cf0615
public/ticket/16773 | Stopgaps:
Dependencies: |
-------------------------------------+-------------------------------------
Changes (by vbraun):
* status: positive_review => needs_work
Comment:
Some more numerical noise on 32-bit:
{{{
sage -t --long src/sage/lfunctions/zero_sums.pyx
**********************************************************************
File "src/sage/lfunctions/zero_sums.pyx", line 337, in
sage.lfunctions.zero_sums.LFunctionZeroSum_abstract.logarithmic_derivative
Failed example:
Z.logarithmic_derivative(2.2,num_terms=50000) # long time
Expected:
(0.5751579645060139, 0.008988775519160675)
Got:
(0.5751579645060141, 0.008988775519160675)
**********************************************************************
1 item had failures:
1 of 10 in
sage.lfunctions.zero_sums.LFunctionZeroSum_abstract.logarithmic_derivative
[132 tests, 1 failure, 8.98 s]
sage -t --long src/sage/rings/real_double.pyx
**********************************************************************
File "src/sage/rings/real_double.pyx", line 2198, in
sage.rings.real_double.RealDoubleElement.dilog
Failed example:
RDF(2).dilog()
Expected:
2.46740110027234
Got:
2.4674011002723395
**********************************************************************
1 item had failures:
1 of 3 in sage.rings.real_double.RealDoubleElement.dilog
[423 tests, 1 failure, 0.32 s]
}}}
Just needs a suitable `# rel tol`...
--
Ticket URL: <http://trac.sagemath.org/ticket/16773#comment:59>
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