[Cfp-interest 2212] Re: quantum

[Mike Cowlishaw]

> > someone who reads that definition will wonder what is the 
> > difference 
> > with an ulp. It would be nice to have a document and/or web page 
> > describing the difference between quantum and ulp (if any) 
> > on some well-chosen examples.
> 
> Perhaps ulp is a function over the real numbers (possibly 
> excluding 0), while quantum is a function over the 
> floating-point representations?

There was some problem with the term 'ulp' so 754 stopped using it (I think
it was because the size of a ulp can change suddenly when normalizing?  I
forget ...).

Mike