Sorry Dirk, I don't remember discussing this topic or alternatives with you at all. Have a nice day.
On Tue, 30 Jun 2020, 14:42 Morgan Morgan, <morgan.email...@gmail.com> wrote: > Thanks Jan and Tomas for the feedback. > Answer from Jan is what I am looking for. > Maybe I am not looking in the right place buy it is not easy to understand > how these LCONS, CONS, SETCDR...etc works. > > Thank you > Best regards > Morgan > > > > On Tue, 30 Jun 2020, 12:36 Tomas Kalibera, <tomas.kalib...@gmail.com> > wrote: > >> On 6/30/20 1:06 PM, Jan Gorecki wrote: >> > It is quite known that R documentation on R C api could be improved... >> >> Please see "5.11 Evaluating R expressions from C" from "Writing R >> Extensions" >> >> Best >> Tomas >> >> > Still R-package-devel mailing list should be preferred for this kind >> > of questions. >> > Not sure if that is the best way, but works. >> > >> > call_to_sum <- inline::cfunction( >> > language = "C", >> > sig = c(x = "SEXP"), body = " >> > >> > SEXP e = PROTECT(lang2(install(\"sum\"), x)); >> > SEXP r_true = PROTECT(CONS(ScalarLogical(1), R_NilValue)); >> > SETCDR(CDR(e), r_true); >> > SET_TAG(CDDR(e), install(\"na.rm\")); >> > Rf_PrintValue(e); >> > SEXP ans = PROTECT(eval(e, R_GlobalEnv)); >> > UNPROTECT(3); >> > return ans; >> > >> > ") >> > >> > call_to_sum(c(1L,NA,3L)) >> > >> > On Tue, Jun 30, 2020 at 10:08 AM Morgan Morgan >> > <morgan.email...@gmail.com> wrote: >> >> Hi All, >> >> >> >> I was reading the R extension manual section 5.11 ( Evaluating R >> expression >> >> from C) and I tried to build a simple call to the sum function. Please >> see >> >> below. >> >> >> >> call_to_sum <- inline::cfunction( >> >> language = "C", >> >> sig = c(x = "SEXP"), body = " >> >> >> >> SEXP e = PROTECT(lang2(install(\"sum\"), x)); >> >> SEXP ans = PROTECT(eval(e, R_GlobalEnv)); >> >> UNPROTECT(2); >> >> return ans; >> >> >> >> ") >> >> >> >> call_to_sum(1:3) >> >> >> >> The above works. My question is how do I add the argument "na.rm=TRUE" >> at C >> >> level to the above call? I have tried various things based on what is >> in >> >> section 5.11 but I did not manage to get it to work. >> >> >> >> Thank you >> >> Best regards >> >> >> >> [[alternative HTML version deleted]] >> >> >> >> ______________________________________________ >> >> R-devel@r-project.org mailing list >> >> https://stat.ethz.ch/mailman/listinfo/r-devel >> > ______________________________________________ >> > R-devel@r-project.org mailing list >> > https://stat.ethz.ch/mailman/listinfo/r-devel >> >> >> [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel