#19928: infinities break the hash contract
-------------------------+----------------------------
Reporter: rws | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-7.1
Component: symbolics | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
-------------------------+----------------------------
{{{
sage: hash(-oo)
-9223372036854775808
sage: hash(SR(-oo))
1390175631
sage: hash(oo)
9223372036854775807
sage: hash(SR(oo))
1577573780
sage: hash(unsigned_infinity)
TypeError: <class 'sage.rings.infinity.UnsignedInfinity'> is not hashable
sage: hash(SR(unsigned_infinity))
2904791665
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/19928>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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