#20256: Implement conversion Infinity <-> PARI
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Reporter: jdemeyer | Owner:
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-7.2
Component: interfaces | Resolution:
Keywords: pari, infinity, | Merged in:
days71 | Reviewers: Jeroen Demeyer
Authors: Kiran Kedlaya | Work issues:
Report Upstream: N/A | Commit:
Branch: | 27357f9c728618232f21ccc48807513319d8461b
u/kedlaya/implement_conversion_infinity_____pari| Stopgaps:
Dependencies: |
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Changes (by jdemeyer):
* status: needs_review => needs_work
* reviewer: => Jeroen Demeyer
Comment:
A few details:
In `infinity.py`:
1. Remove the commented-out line `#from sage.libs.all import pari,
pari_gen` (I don't know why the import does not work, but that's not so
important)
2. Is there a possibility that `self._sign` is not 1 or -1? It might be
safer to use `if self._sign >= 0: .... else: .....` and remove the `raise
TypeError`.
3. Replace `TESTS::` by `EXAMPLES::` in the `_pari_()` documentation.
In `gen.pyx`:
4. Add doctests for both pieces of added code.
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Ticket URL: <http://trac.sagemath.org/ticket/20256#comment:5>
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