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@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@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. ______________________________________________ R-help@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.