#20127: test_relation: uncaught NoConvergence
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Reporter: behackl | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-7.1
Component: symbolics | Keywords:
Merged in: | Authors: Benjamin Hackl
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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Testing the following expression for zero randomly results in a
`NoConvergence` error being thrown from `mpmath`:
{{{
sage: var('k')
k
sage: bool(gamma(k*pi) * zetaderiv(1, k*pi*I)/log(2)^2 == 0)
False
}}}
or
{{{
sage: bool(gamma(k*pi) * zetaderiv(1, k*pi*I)/log(2)^2 == 0)
Traceback (most recent call last):
...
NoConvergence: zeta: too much cancellation
}}}
This ticket adds this error to the list of caught errors in
`test_relation`.
--
Ticket URL: <http://trac.sagemath.org/ticket/20127>
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