#18266: Conversion from Sage polynomial to gap/libgap
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Reporter: vdelecroix | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-7.3
Component: interfaces | Resolution:
Keywords: | Merged in:
Authors: Vincent Delecroix | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/vdelecroix/18266 | f1b8bcd98ffadede706ec244975fab07fa3bd942
Dependencies: | Stopgaps:
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Comment (by vdelecroix):
It is a good idea to discuss what should we do concerning coercion and
external softwares/libraries.
Concerning this ticket, it is very handy that the coercion always go from
Sage to third party interfaces
{{{
sage: x = polygen(ZZ)
sage: p = x^3 + 2*x + 1
sage: p(pari(2))
13
sage: type(_)
<type 'sage.libs.pari.gen.gen'>
}}}
Making explicit the subset of Sage parents that can actually be
represented in a given interface might indeed be much better. But
certainly harder to write and maintain. The way I choose is the lazy one.
The error messages you mentioned are wrong but should never appear if you
restrict to "pure Sage functions". If desirable for pari/gap, I guess that
implementing it belongs to another ticket.
--
Ticket URL: <https://trac.sagemath.org/ticket/18266#comment:7>
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