[Python-ideas] Suggestion: Extend integers to include iNaN

[Steve Barnes]

On 30/09/2018 15:48, Chris Angelico wrote:
> On Mon, Oct 1, 2018 at 12:45 AM Anders Hovmöller <boxed at killingar.net> wrote:
>> But making any change to the basic types truth table is a big -1 from me. This seems like a Python 2-3 transition to me.
>>
> 
> Far FAR worse than anything that changed in Py2->Py3.
> 
> ChrisA
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> 
I can see that breaking a LOT of existing code so would not think that 
it would be a practical option, I am thinking of having a isnan &/or 
isvalue.

If the behaviour of integers were changed so that all NaN producing 
operations that took non-NaN inputs were to produce a signalling NaN, 
i.e. also produce an Exception but a pass on that Exception (explicitly 
changed Signalling NaN to Quiet NaN) I don't see any non-NaN aware code 
being forced to change.
-- 
Steve (Gadget) Barnes
Any opinions in this message are my personal opinions and do not reflect 
those of my employer.

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