#16813: symbolic Legendre / associated Legendre functions / polynomials
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Reporter: rws | Owner:
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.6
Component: symbolics | Resolution:
Keywords: | Merged in:
Authors: Ralf Stephan, | Reviewers:
Stefan Reiterer | Work issues:
Report Upstream: N/A | Commit:
Branch: | 9df78de81e0c307a1181a6ad4453bc56a93870b2
u/rws/symbolic_legendre___associated_legendre_functions___polynomials|
Stopgaps:
Dependencies: #17953 |
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Comment (by rws):
Replying to [comment:52 mmezzarobba]:
> Is the idea that calls to `legendre_P(n, x)` with no `algorithm` keyword
will always take the branch corresponding to `x` in `SR`, but the user can
obtain faster evaluations at integers etc. by specifying
`algorithm='pari'` is they know what they are doing?
No, there is no idea, I just haven't figured out why the `BuiltinFunction`
mechanism won't give me the original `x`, so I klugded something in
`OrthogonalFunction.__call__` triggered by `algorithm`. This will have to
be fixed but not today.
--
Ticket URL: <http://trac.sagemath.org/ticket/16813#comment:67>
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