#20017: implement cos and sin of power series
-------------------------+-------------------------------------------------
Reporter: | Owner:
chapoton | Status: positive_review
Type: | Milestone: sage-7.1
enhancement | Resolution:
Priority: major | Merged in:
Component: | Reviewers: Ralf Stephan
calculus | Work issues:
Keywords: | Commit:
Authors: | a7cb277b2445abe758660cd058ebdb05d3d16cab
Frédéric Chapoton | Stopgaps:
Report Upstream: N/A |
Branch: |
u/chapoton/20017 |
Dependencies: |
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Changes (by rws):
* status: needs_review => positive_review
* reviewer: => Ralf Stephan
Comment:
Apart from the not optimal performance at higher order this looks good.
Please cc me with any further tickets like this.
{{{
sage: R.set_default_prec(100)
sage: time _ = sin(x*exp(x))
CPU times: user 44 ms, sys: 0 ns, total: 44 ms
Wall time: 44.7 ms
sage: R.set_default_prec(200)
sage: time _ = sin(x*exp(x))
CPU times: user 216 ms, sys: 0 ns, total: 216 ms
Wall time: 214 ms
sage: R.set_default_prec(300)
sage: time _ = sin(x*exp(x))
CPU times: user 660 ms, sys: 8 ms, total: 668 ms
Wall time: 667 ms
sage: R.set_default_prec(400)
sage: time _ = sin(x*exp(x))
CPU times: user 1.61 s, sys: 4 ms, total: 1.62 s
Wall time: 1.61 s
sage: R.set_default_prec(500)
sage: time _ = sin(x*exp(x))
CPU times: user 3.19 s, sys: 4 ms, total: 3.2 s
Wall time: 3.19 s
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/20017#comment:3>
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