From r@mp@|et|enne @end|ng |rom gm@||@com  Wed Feb 20 23:55:13 2019
From: r@mp@|et|enne @end|ng |rom gm@||@com (Rampal Etienne)
Date: Wed, 20 Feb 2019 22:55:13 +0000
Subject: [Rd] code for sum function
In-Reply-To: <13de2483-4cb0-38eb-4bcc-138844a3c0a8@gmail.com>
References: <c1495700-e265-4ff8-1f36-e149bd4d1961@gmail.com>
 <13de2483-4cb0-38eb-4bcc-138844a3c0a8@gmail.com>
Message-ID: <CAOuLjjRV4cDb73re6JVsMsnVSgBNRdLEPrP=Z6cxSHtnUakUzw@mail.gmail.com>

Dear Tomas,

Where do I find these files? Do they contain the code for the sum function?

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.kalibera at 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
> >
> > ______________________________________________
> > R-devel at r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-devel
>
>
>

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[Rd] code for sum function
Rampal Etienne