[R] finding and opening C source called from R functions.

Peter Langfelder peter.langfelder at gmail.com
Mon Dec 20 21:56:15 CET 2010

On Mon, Dec 20, 2010 at 12:48 PM, Chiquoine, Ben <BChiquoine at tiff.org> wrote:
> Hi,
> As will soon be very clear I'm an R novice.  I'm trying to better understand the ks.test function in the stats package.  When I look at the source code there are several calls to C functions (for example .C("pkstwo", is.integer(length(x[IND])), p=as.double(x[IND]), as.double(tol), PACKAGE = "stats)$P).  I'm wondering if there is a way to view the source code for the underlying C functions?  I googled a post which said to open ks.c to see the source code but I can't find that file anywhere on my hard drive or on the web.  Any suggestions would be greatly appreciated.

Go to cran.r-project.org, find the package stats, download the tar.gz
bundle, unpack it (on a linux command line, you can type tar -xvzf
stats*.tar.gz), then navigate to the directory stats/src and look at
the source code in the directory.

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