David-Sarah Hopwood wrote:
> Sam Ruby wrote:
>> On Mon, Aug 25, 2008 at 7:03 PM, Waldemar Horwat <[EMAIL PROTECTED]> wrote:
>>> What should compareTotal do when you compare -NaN and NaN?
>> Re: the subject line; NaN's have a payload that corresponds to the
>> size of the mantissa.
>
> No they don't; not in ECMAScript. -NaN is computationally indistinguishable
> from NaN by ECMAScript code. There is no payload and no quiet/signalling
> distinction.
That's because ECMAScript doesn't (yet) have compareTotal. When it's added
(it's mandatory in IEEE P754), then this will become an interesting question.
You will be able to tell whether -NaN somehow produces a different Nan from
+NaN.
Waldemar
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