[R] Precision of values > 53 bits

[Ted Harding]

On Thu, 2017-07-20 at 14:33 +0200, peter dalgaard wrote:
> > On 10 Jan 2013, at 15:56 , S Ellison <S.Ellison at lgcgroup.com> wrote:
> > 
> > 
> > 
> >> I am working with large numbers and identified that R looses 
> >> precision for such high numbers.
> > Yes. R uses standard 32-bit double precision.
> 
> 
> Well, for large values of 32... such as 64.

Hmmm ... Peter, as one of your compatriots (guess who) once solemnly
said to me:

  2 plus 2 is never equal to 5 -- not even for large values of 2.

Best wishes,
Ted.