#18092: evaluating symbolic expressions (without conversion to SR, i.e.,
staying in
ring of values)
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Reporter: | Owner:
dkrenn | Status: needs_info
Type: | Milestone: sage-6.6
enhancement | Resolution:
Priority: major | Merged in:
Component: | Reviewers:
symbolics | Work issues:
Keywords: sd66 | Commit:
Authors: | 7e0be7f3a76c98d5ec3e5250947aec814467048b
Daniel Krenn | Stopgaps:
Report Upstream: N/A |
Branch: |
u/dkrenn/SR/eval |
Dependencies: |
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Comment (by dkrenn):
Replying to [comment:10 vdelecroix]:
> Why not
> {{{
> sage: E = (1+x).subs(x=RIF(3.42))
> sage: E.parent()
> sage: F = E.pyobject()
> sage: F
> 4.4200000000000000?
> sage: F.parent()
> Real Interval Field with 53 bits of precision
> }}}
Ok, I see. Maybe RIFs are not a good example since they coerce into SR.
Power series are better" example; since there problems.
I'll rewrite the description of the ticket and the examples.
--
Ticket URL: <http://trac.sagemath.org/ticket/18092#comment:13>
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