[R] Accessing C source files

[Jeff Newmiller]

Seems like you are looking in the wrong place. Did you download the source code? [1]

[1] https://cran.r-project.org/

On August 5, 2019 6:18:14 AM PDT, ravi via R-help <r-help using r-project.org> wrote:
>Hi all,On looking at the source code for the integrate function, I find
>that it has the following call:
>wk <- .External(C_call_dqagi, ff, rho = environment(),            
>as.double(bound), inf, as.double(abs.tol), as.double(rel.tol),        
>    limit = limit)How do I access the source code for C_call_dqagi?
>From other references ("Writing R-extensions section 6.9), I find a
>reference to Rdqagi when discussing the integrate function. I would
>like to know if C_call_dqagi and Rdqagi are the same.How do I access
>the source code for either of these functions? From the article titled
>"R help desk Acessing the sources" by Uwe Ligges in Rnews_2006-4, I
>gather that the C files can be found in the folder $R_HOME/src/main/.
>But when I look at the equivalent folder in R 3.6.1, I find that the
>main sub-folder is missing in src (the only sub-folder found there is
>library). I do not find any C file in the src subfolder 
>Where do I find the C source files? How do I get to look at them? I
>have a lot of follow-up questions on interfacing with the C files, but
>I would like to first know where I can find them. At least on how I can
>access them.Thanks,Ravi Sutradhara
>
>
>	[[alternative HTML version deleted]]
>
>______________________________________________
>R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide
>http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.

-- 
Sent from my phone. Please excuse my brevity.