#8896: 0.0000000000000000000000000000 is parsed completely differently than
1.0000000000000000000000000000 for no good reason
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Reporter: was | Owner: AlexGhitza
Type: defect | Status: positive_review
Priority: minor | Milestone: sage-4.7.1
Component: basic arithmetic | Keywords:
Work_issues: | Upstream: N/A
Reviewer: Mariah Lenox | Author: Robert Bradshaw
Merged: | Dependencies:
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Description changed by jdemeyer:
Old description:
> In Sage 0.0 and 0.00000000000000000000000000000000000000 should not
> denote the same thing, though sadly they do. Note, however, that 1.0 and
> 1.00000000000000000000000000000000000000 are different in Sage (as I
> expect):
> {{{
> sage: 0.0
> 0.000000000000000
> sage: 0.00000000000000000000000000000000000000
> 0.000000000000000
> sage: parent(0.00000000000000000000000000000000000000)
> Real Field with 53 bits of precision
> sage: 1.00000000000000000000000000000000000000
> 1.0000000000000000000000000000000000000
> sage: 1.0
> 1.00000000000000
> sage: parent(1.00000000000000000000000000000000000000)
> Real Field with 130 bits of precision
> sage: parent(1.0)
> Real Field with 53 bits of precision
> }}}
> I consider the above inconsistency a bug.
New description:
In Sage 0.0 and 0.00000000000000000000000000000000000000 should not denote
the same thing, though sadly they do. Note, however, that 1.0 and
1.00000000000000000000000000000000000000 are different in Sage (as I
expect):
{{{
sage: 0.0
0.000000000000000
sage: 0.00000000000000000000000000000000000000
0.000000000000000
sage: parent(0.00000000000000000000000000000000000000)
Real Field with 53 bits of precision
sage: 1.00000000000000000000000000000000000000
1.0000000000000000000000000000000000000
sage: 1.0
1.00000000000000
sage: parent(1.00000000000000000000000000000000000000)
Real Field with 130 bits of precision
sage: parent(1.0)
Real Field with 53 bits of precision
}}}
I consider the above inconsistency a bug.
Apply [attachment:8896-rebased.patch]
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8896#comment:24>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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