#7377: Symbolic Ring to Maxima via EclObject
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Reporter: nbruin |
Owner: nbruin
Type: enhancement |
Status: needs_work
Priority: major |
Milestone: sage-feature
Component: symbolics |
Keywords:
Author: Nils Bruin, Jean-Pierre Flori |
Upstream: N/A
Reviewer: Jean-Pierre Flori, François Bissey, Karl-Dieter Crisman |
Merged:
Work_issues: |
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Comment(by nbruin):
Great work! The patches don't apply on 4.6.1 so I can't test them at the
moment. Reading through the patch:
* Line 74
{{{
(string-trim '(#\Newline) (with-output-to-string (*standard-output*)
(terpri)
}}}
If you're going to trim the newlines, don't bother with terpri. It just
inserts a newline. Perhaps if you delete the terpri the trimming isn't
necessary (I put it there because previously, the "ask" error messages had
a newline before the question)
* derivatives: If you want FDerivativeOperator handled by
special_sage_to_max you'll need to change a bit more than just the API of
the functions in that dictionary (for that, you can just put "op" as the
first parameter and not use it in most cases)
One possibility is to index special_sage_to_max by type(op) rather than
op. Then it makes a lot more sense to pass op as a parameter too (because
currently, the op would be a constant for any entry in
special_sage_to_max).
* the line:
{{{
[deriv_max.extend([sr_to_max(args[i]), EclObject(params.count(i))]) for i
in set(params)]
}}}
leads to an algorithm that is quadratic in the number of variables, but it
should be (soft) linear. It should be interesting to design an example
where this matters ...)
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7377#comment:73>
Sage <http://www.sagemath.org>
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