This is in R-exts. If the Fortran subroutine is called `dqrfit', you would use something like:
F77_CALL(dqrfit)(...); All arguments need to be pointers, as Fortran passes by reference. Andy > From: James Bullard > > Hello, I had a question about calling some of R's fortran > routines from C. > Specifically, I would like to call: dqrfit from some C code > which will be > bundled as an R package. I was hoping someone knew of an > example in some > of R's code which does something like this (any fortran call > from R's C > would probably be a sufficient guide). So far I can only find > locations > where R calls the Fortran directly, but this is not an option for me. > > Also, I am trying to gauge the overhead of making this call, > does anyone > have any knowledge of whether there might be some non-trivial > constant > time penalty on making such a call. > > Thanks in advance, Jim > > ______________________________________________ > 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
