Hi, I have not followed the e-mail trail, but if you are looking for the C source code for pbinom, then it is pbinom.c in src/nmath.
HTH, Ranjan On Wed, 27 Aug 2014 08:34:11 -0400 Marius Hofert <marius.hof...@math.ethz.ch> wrote: > Dear Sarah, Dear David, > > thanks for helping. I know the FAQ and I know the R News article, but > I still couldn't figure it out. First, pbinom calls > .External(C_pbinom,...). Grepping for C_pbinom reveals... nothing > (except the appearance in .External). Going to ./src/main/names.c > reveals "{"pbinom", do_math3, 5, 11, 3+2, {PP_FUNCALL, PREC_FN, 0}},", > so the next step is to grep for do_math3 (which also applies for > "dbeta", "pbeta",..., "qnbinom_mu"). There is a connection to pbinom > again in ./src/main/arithmetic.c (SEXP attribute_hidden do_math3): > Math3_2(args, pbinom) is called. src/library/stats/src/distn.c then > shows that "Math3_2(args, pbinom)" is called. Since we just already > grepped for Math3_2, the trip ends here. > > So how can one find the source code of pbinom() in this case? > > Cheers, > > Marius > > > On Wed, Aug 27, 2014 at 7:28 AM, Sarah Goslee <sarah.gos...@gmail.com> wrote: > > R FAQ 7.40 > > > > http://cran.r-project.org/doc/FAQ/R-FAQ.html#How-do-I-access-the-source-code-for-a-function_003f > > > > Sarah > > > > > > On Tuesday, August 26, 2014, Marius Hofert <marius.hof...@math.ethz.ch> > > wrote: > >> > >> Dear expeRts, > >> > >> I would like to find out how R computes pbinom(). A grep in the > >> source code reveiled src/library/stats/R/distn.R:146: > >> .External(C_pbinom, q, size, prob, lower.tail, log.p), so > >> 'C_pbinom' refers to compiled C/C++ code loaded into R. Where can > >> I find the source code of C_pbinom? > >> > >> Cheers, > >> > >> Marius > >> > > > > > > -- > > Sarah Goslee > > http://www.stringpage.com > > http://www.sarahgoslee.com > > http://www.functionaldiversity.org > > ______________________________________________ > R-help@r-project.org mailing list > 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. > -- Important Notice: This mailbox is ignored: e-mails are set to be deleted on receipt. Please respond to the mailing list if appropriate. For those needing to send personal or professional e-mail, please use appropriate addresses. ____________________________________________________________ Can't remember your password? Do you need a strong and secure password? Use Password manager! It stores your passwords & protects your account. ______________________________________________ R-help@r-project.org mailing list 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.