#12353: wrong comparison between RealIntervalField and RealField
-------------------------------------+--------------------------------------
Reporter: zimmerma | Owner: AlexGhitza
Type: defect | Status: needs_work
Priority: major | Milestone: sage-5.0
Component: basic arithmetic | Keywords:
Work_issues: remove RQDF reference | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Old description:
> on some machines we get the following:
> {{{
> sage: RealIntervalField(53)(-1) > RR(1)
> False
> sage: RealIntervalField(54)(-1) > RR(1)
> True
> }}}
> The second answer {{{True}}} is clearly wrong.
>
> If your machine gets the correct answer {{{False}}} in both cases, then
> it most probably gives:
> {{{
> sage: RealIntervalField(54)(1) > RR(-1)
> True
> sage: RealIntervalField(54)(1) > RR(-1)
> False
> }}}
> where the second answer {{{False}}} is wrong.
New description:
on some machines we get the following:
{{{
sage: RealIntervalField(53)(-1) > RR(1)
False
sage: RealIntervalField(54)(-1) > RR(1)
True
}}}
The second answer {{{True}}} is clearly wrong.
If your machine gets the correct answer {{{False}}} in both cases, then it
most probably gives:
{{{
sage: RealIntervalField(53)(1) > RR(-1)
True
sage: RealIntervalField(54)(1) > RR(-1)
False
}}}
where the second answer {{{False}}} is wrong.
--
Comment(by zimmerma):
oops there was a typo in the description.
Paul
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12353#comment:16>
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