#19256: inconsistent numerics with RR/CC/CDF(pi,sqrt(2))
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Reporter: rws | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.9
Component: symbolics | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Description changed by rws:
Old description:
> {{{
> sage: (CC(pi)-pi).n()
> -3.10862446895044e-15
> sage: (RR(pi)-pi).n()
> 0.000000000000000
> sage: (CC(sqrt(2))-sqrt(2)).n()
> -5.10702591327572e-15
> sage: (RR(sqrt(2))-sqrt(2)).n()
> 0.000000000000000
>
> sage: (ComplexField(54)(pi)-pi).n()
> -3.10862446895044e-15
> sage: (ComplexField(55)(pi)-pi).n()
> 0.000000000000000
> sage: (ComplexField(60)(sqrt(2))-sqrt(2)).n()
> -2.22044604925031e-16
> sage: (ComplexField(61)(sqrt(2))-sqrt(2)).n()
> 0.000000000000000
> }}}
New description:
{{{
sage: RR(sqrt(2))
1.41421356237310
sage: CC(sqrt(2))
1.41421356237309
sage: (CC(pi)-pi).n()
-3.10862446895044e-15
sage: (RR(pi)-pi).n()
0.000000000000000
sage: (CC(sqrt(2))-sqrt(2)).n()
-5.10702591327572e-15
sage: (RR(sqrt(2))-sqrt(2)).n()
0.000000000000000
sage: (ComplexField(54)(pi)-pi).n()
-3.10862446895044e-15
sage: (ComplexField(55)(pi)-pi).n()
0.000000000000000
sage: (ComplexField(60)(sqrt(2))-sqrt(2)).n()
-2.22044604925031e-16
sage: (ComplexField(61)(sqrt(2))-sqrt(2)).n()
0.000000000000000
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/19256#comment:4>
Sage <http://www.sagemath.org>
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