#20226: Implement conversion PARI <-> Python int/long without GMP/MPIR
-------------------------------------+-------------------------------------
Reporter: jdemeyer | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-7.2
Component: interfaces | Resolution:
Keywords: days77 | Merged in:
Authors: Jeroen Demeyer | Reviewers: Luca De Feo
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/jdemeyer/ticket/20226 | 47df94cc7c5181f99717d164b1929c516d039ec1
Dependencies: | Stopgaps:
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Comment (by vdelecroix):
Would it be possible to test the subtle `LONG_MIN` case in
`gen_to_integer`? Maybe along
{{{
sage: a = gen_to_integer(pari("2^63-1")); a; type(a)
9223372036854775807
<type 'int'>
sage: a = gen_to_integer(pari("2^63")); a; type(a)
9223372036854775808L
<type 'long'>
sage: a = gen_to_integer(pari("-2^63")); a; type(a)
-9223372036854775808
<type 'int'>
sage: a = gen_to_integer(pari("-2^63-1")); a; type(a)
-9223372036854775809L
<type 'long'>
}}}
What do you think of moving `gtoi` into PARI (not necessarily for this
ticket)? This function is only about PARI's internal.
--
Ticket URL: <http://trac.sagemath.org/ticket/20226#comment:17>
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