#12171: Update MPFI to 1.5.0
---------------------------+------------------------------------------------
Reporter: mhansen | Owner: tbd
Type: enhancement | Status: needs_info
Priority: major | Milestone: sage-4.8
Component: packages | Keywords: sd35
Work_issues: | Upstream: N/A
Reviewer: | Author: Mike Hansen
Merged: | Dependencies:
---------------------------+------------------------------------------------
Comment(by zimmerma):
ok I understand why the following "fails":
{{{
sage: R = RealIntervalField(100)
sage: s = 1/R(3)
sage: t = loads(dumps(s))
sage: t == s
False
}}}
In the {{{real_mpfi.pyx}}} file, it is said that s cmp t returns True if a
cmp b is true for any
element a in s and any element b in t. Obviously when cmp is == and t is
the same interval as s
this can hold only when both are the same point interval. Thus to check if
s and t are the same
interval, we should write:
{{{
sage: (t.upper(), t.lower()) == (s.upper(), s.lower())
True
}}}
Paul
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12171#comment:18>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
