On 2/20/19 2:55 PM, Rampal Etienne wrote:
Dear Tomas,
Where do I find these files? Do they contain the code for the sum function?
Yes.
https://svn.r-project.org/R/trunk/
David
What do you mean exactly with your point on long doubles? Where can I find
documentation on this?
Cheers, Rampal
On Mon, Feb 18, 2019, 15:38 Tomas Kalibera <tomas.kalib...@gmail.com wrote:
See do_summary() in summary.c, rsum() for doubles. R uses long double
type as accumulator on systems where available.
Best,
Tomas
On 2/14/19 2:08 PM, Rampal Etienne wrote:
Hello,
I am trying to write FORTRAN code to do the same as some R code I
have. I get (small) differences when using the sum function in R. I
know there are numerical routines to improve precision, but I have not
been able to figure out what algorithm R is using. Does anyone know
this? Or where can I find the code for the sum function?
Regards,
Rampal Etienne
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