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Re: Motion 31: V04.2 Revision of proposed Level 1 text

> Date: Wed, 15 Feb 2012 15:31:21 +0100
> From: Vincent Lefevre <vincent@xxxxxxxxxx>
> To: stds-1788 <stds-1788@xxxxxxxxxxxxxxxxx>
> Subject: Re: Motion 31: V04.2 Revision of proposed Level 1 text
> 
> On 2012-02-13 12:16:44 +0100, Ulrich Kulisch wrote:
> > . . .
> 
> > Let me make another remark: Arithmetic for extended real intervals (closed
> > and connected sets of real numbers) is free of exceptions. So a standard for
> > interval arithmetic could be greatly simplified by a more strict separation
> > form IEEE754 for floating-point arithmetic (no automatic type transfer from
> > floating-point to interval).
> 
> I don't disgree with that (if I understand what you mean).
> 
> Regards,
> 
> -- 
> Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <http://www.vinc17.net/>

	Aside from my own opinions on the matter, this is a very
	good reason for keeping NaNs out of the level 2 structure
	of 1788.  I just can't figure out how in all cases.  - Dan