#12116: perfect_power for integers
--------------------------------+-------------------------------------------
Reporter: roed | Owner: AlexGhitza
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.0
Component: basic arithmetic | Keywords:
Work_issues: | Upstream: None of the above - read
trac for reasoning.
Reviewer: David Loeffler | Author: David Roe
Merged: | Dependencies: #10596, #12363
--------------------------------+-------------------------------------------
Changes (by davidloeffler):
* status: needs_work => needs_review
* upstream: Completely fixed; Fix reported upstream => None of the above
- read trac for reasoning.
Comment:
Can we have a new option for the "Report Upstream" menu, "upstream claim
to have fixed it but they apparently haven't"? PARI apparently believes
that {{{ 2^3 = -8 }}}:
{{{
GP/PARI CALCULATOR Version 2.5.1
(development git-5c5e253)
amd64 running linux (x86-64/GMP-5.0.1
kernel) 64-bit version
compiled: Mar 5 2012, gcc-4.4.3
(Ubuntu 4.4.3-4ubuntu5)
(readline v6.2 enabled,
extended help enabled)
Copyright (C) 2000-2011
The PARI Group
PARI/GP is free software, covered by the GNU General Public License, and
comes WITHOUT ANY WARRANTY WHATSOEVER.
Type ? for help, \q to quit.
Type ?12 for how to get moral (and possibly technical) support.
parisize = 8000000, primelimit = 500509
? ispower(-8, , &n)
%1 = 3
? n
%2 = 2
}}}
So I suggest we merge this patch as it is, and send another bug report to
PARI -- roed, can you do the honours?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12116#comment:10>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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