Re: Bare decorations (was ...level 2 datums)
Nate
On 26 Oct 2010, at 01:08, Nate Hayes wrote:
>> Q3. I see no good reason why the different kinds of NaI that might be
>> found useful in applications should be in 1-1 correspondence with the
>> different decoration values used in whatever exception handling scheme we
>> finalise. Justification, anyone?
>
> I don't fully understand the question.
In Dan's experience, various NaN-like values were proposed, arising from user needs: "missing data", "finite real of unknown value", "arbitrarily large value", etc. though none made it to the final standard. In the present situation, the different "NaIs" arise not from user needs but from choices internal to P1788: e.g. if we go with Arnold's scheme there'll be 5 of them. Not a criticism, just a thought.
John