Re: An error in Section 14.4 of the final draft
On 2014-07-07 10:16:57 -0400, Michel Hack wrote:
> On Mon, 7 Jul 2014 09:45:46 +0100 John Pryce wrote:
> > - On converting to the interchange bitstring, do we say the payload
> > of such a NaN (at Level 4 it *has* a payload, one can't evade that)
> > SHALL/SHOULD/MAY be preserved?
>
> Definitely not. This kind of information is only relevant in a particular
> implementation and has no place in an interchange format. I think it is
> useful to know that imported intervals carry no extra baggage. This does
> not prevent an implementation from recording whatever it wants in unused
> (from a standard point of view) bits, but the standard need say nothing
> beyond what it says in the Note.
I agree. In particular, one doesn't know possible applications yet,
which would use the payload, so that we don't even know what could
be useful.
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Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <https://www.vinc17.net/>
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Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)