[R] Accessing C source files

Duncan Murdoch murdoch@dunc@n @end|ng |rom gm@||@com
Mon Aug 5 15:49:46 CEST 2019

On 05/08/2019 9:43 a.m., ravi via R-help wrote:
>   Hi Jeff,Thanks for your quick answer. But I don't understand. I have installed R from the installer (I think that it is called the binary). Do you mean that I will have to do it via the source? Will I see the source code only then? Are there any other methods? In any case, it would be helpful if you can explain what you mean by "downloading the source code".Thanks,Ravi

You can see each file online if you don't want to download it all.  The 
current development code is in https://svn.r-project.org/R/trunk, 
individual versions are in subdirectories of 
https://svn.r-project.org/R/tags .  Pick one of these, and then follow 
links to src etc. within it.

Duncan Murdoch

>      On Monday, 5 August 2019, 15:32:00 CEST, Jeff Newmiller <jdnewmil using dcn.davis.ca.us> wrote:
>   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]]
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