#11952: Fix conversion Python -> PARI
--------------------------+-------------------------------------------------
Reporter: jdemeyer | Owner: was
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.7.3
Component: interfaces | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author: Jeroen Demeyer
Merged: | Dependencies: #11130, #11321, #11854, #11891,
#11890, #11836, #11904
--------------------------+-------------------------------------------------
Description changed by jdemeyer:
Old description:
> Conversion of a Python `complex` to PARI fails:
> {{{
> sage: pari(complex(I))
> *** Warning: unused characters: j.
> 1
> }}}
>
> Moreover, the conversion of other Python types to PARI can be improved by
> adding special code instead of using strings.
New description:
Conversion of a Python `complex` to PARI fails:
{{{
sage: pari(complex(I))
*** Warning: unused characters: j.
1
}}}
Moreover, the conversion of other Python types to PARI can be improved by
adding special code instead of using strings. This also makes the
conversion more precise, see the example below:
Without patch:
{{{
sage: f = float(4651990089563211/4503599627370496)
sage: f
1.0329493015522242
sage: pari(f)
1.03294930155000
}}}
With patch:
{{{
sage: f = float(4651990089563211/4503599627370496)
sage: f
1.0329493015522242
sage: pari(f)
1.03294930155222
}}}
--
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11952#comment:7>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
