#19577: performance improvement of mutable poset used for univariate asymptotic
expansions
-------------------------------------+-------------------------------------
Reporter: dkrenn | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.10
Component: asymptotic | Resolution:
expansions | Merged in:
Keywords: | Reviewers:
Authors: Daniel Krenn | Work issues:
Report Upstream: N/A | Commit:
Branch: u/dkrenn/asy | b2af8aa130f6d386c6a163971f37dc4ba98e4bf6
/speed-topo-iter | Stopgaps:
Dependencies: |
-------------------------------------+-------------------------------------
Description changed by dkrenn:
Old description:
> Reduce the evaluation time of the topological iterator.
>
> As a result the time evaluating
> {{{
> asymptotic_expansions.Binomial_kn_over_n('n', k=2, precision=10,
> algorithm='direct')
> }}}
> (see #19510) decreases at about 40%.
New description:
Reduce the evaluation time of the topological iterator.
As a result the time evaluating
{{{
k=4; S = asymptotic_expansions.Stirling('n', precision=5); n =
S.parent().gen(); S.subs(n=k*n) / (S.subs(n=(k-1)*n) * S)
}}}
(see #19306) dramatically decreases (see comment below for some timings).
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Ticket URL: <http://trac.sagemath.org/ticket/19577#comment:4>
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