[Cfp-interest 2218] Re: quantum

[Vincent Lefevre]

On 2021-10-07 12:45:13 +0100, Mike Cowlishaw wrote:
> Vincent wrote:
>  
> > Yes, the different definitions of ulp.
> > 
> > > - and thus ulp depends on the format;
> > 
> > but ditto with the quantum (which also depends on the representation).
> 
> I'm not quite sure what you mean by 'representation' here.

The meaning from the IEEE 754 standard:

  Level 3  (sign, exponent, significand) ∪ ...  Representations of
                                                floating-point data.

> The quantum of a floating-point number only depends on its radix and
> exponent, not on how it is depicted.

But the exponent depends on the representation (see above).

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