On May 6, 2011, at 4:03 AM, Philipp Pagel wrote:
which is the maximum large of digits that R has?, because SQL work
with 50 digits I think.
I am wondering if that is binary or decimal.
and I need a software that work with a lot
of digits.
The .Machine() command will provide some insight into these matters.
On my device (and I suspect on all versions of R) .Machine is a built-
in list and there is no .Machine() function.
.Machine returns a list that includes
$integer.max
[1] 2147483647
And you can look at the FAQ:
http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-doesn_0027t-R-think-these-numbers-are-equal_003f
Which tells you that R can handle 53 digits _binary_
In agreement with these components of .Machine:
$double.base
[1] 2
$double.digits
[1] 53
... and the FAQ has some explicit warnings about trusting more than 16
digits decimal.
And look at the package, 'gmp'.
cu
Philipp
--
David Winsemius, MD
West Hartford, CT
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