#11613: RealInterval expression comparisons broken
---------------------------+------------------------------------------------
Reporter: eviatarbach | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone: sage-4.7.2
Component: symbolics | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Old description:
> RealIntervalField (RIF) comparisons are broken. For example,
>
> {{{
> sage: RealInterval(4,5)==RealInterval(4,5)
> False
> sage: RIF(4,5)==RIF(4,5)
> False
> }}}
>
> A possibly related bug:
>
> {{{
> sage: bool(RealInterval(4,5)*x==RealInterval(4,5)*x)
> ERROR: An unexpected error occurred while tokenizing input
> The following traceback may be corrupted or invalid
> The error message is: ('EOF in multi-line statement', (1006, 0))
> TypeError:
> }}}
New description:
Expressions involving RealIntervals do not compare properly, returning a
TypeError. For example,
{{{
sage: bool(RealInterval(4,5)*x==RealInterval(4,5)*x)
ERROR: An unexpected error occurred while tokenizing input
The following traceback may be corrupted or invalid
The error message is: ('EOF in multi-line statement', (1006, 0))
TypeError:
}}}
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Comment(by eviatarbach):
Oh, I see. The second bug is still valid though, so I will edit the ticket
to reflect this.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11613#comment:2>
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