Thanks to James Holtman for the confirmation of the IEEE definition,
and to Marc Schwartz and Roger Koenker for pointing out .Machine
which I had not been aware of!
For the latter, the information I wanted is in
.Machine$double.digits
[1] 53
so that the largest integer exactly represented is
1e100 is just one example of much bigger number that is exactly
represented
(in floating point). But of course
1e100+1 - 1e100
[1] 0
You mean the biggest number such that adding one changes the result?
I should be extremely careful with
print( 9007199254740994, digits=20)
[1] 9007199254740994
(Ted Harding) [EMAIL PROTECTED] writes:
With a bit of experimentation I have determined (I think)
that on my R implementation the largest positive integer
that is exactly represented is (2^53 - 1), based on
(((2^53)-1)+1) - ((2^53)-1)
[1] 1
((2^53)+1) - (2^53)
[1] 0
Those integer
On Wed, 2003-08-13 at 07:55, [EMAIL PROTECTED] wrote:
Hi Folks,
With a bit of experimentation I have determined (I think)
that on my R implementation the largest positive integer
that is exactly represented is (2^53 - 1), based on
(((2^53)-1)+1) - ((2^53)-1)
[1] 1
((2^53)+1) - (2^53)
