#12171: Update MPFI to 1.5.0
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Reporter: mhansen | Owner: tbd
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-4.8
Component: packages | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author: Mike Hansen
Merged: | Dependencies:
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Comment(by zimmerma):
there is one important change in MPFI 1.5.0 which might cause the
failures: {{{mpfi_set_ui}}} on
input 0 gives {{{[+0.0,-0.0]}}} instead of {{{[+0.0,+0.0]}}} previously. I
will ask upstream why:
{{{
sage: R=RealIntervalField(53)
sage: a=R(0)
sage: a.lower(), a.upper()
(0.000000000000000, -0.000000000000000)
}}}
More annoying is the following, which I believe is a bug in MPFI 1.5.0:
{{{
sage: a=R(infinity)
sage: a.lower(), a.upper()
(+infinity, +infinity)
sage: b=1/a
sage: b.lower(), b.upper()
(0.000000000000000, -0.000000000000000)
}}}
(I would expect {{{b=[+0.0,+0.0]}}}.)
Paul
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12171#comment:6>
Sage <http://www.sagemath.org>
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