Thanks for the useful tips! -----Original Message----- From: Duncan Murdoch <murdoch.dun...@gmail.com> Sent: Friday, March 8, 2019 1:32 PM To: Wang, Zhu <wan...@uthscsa.edu>; R-package-devel@r-project.org Subject: Re: [R-pkg-devel] compute pnorm in Fortran subroutine in R package
On 08/03/2019 12:55 p.m., Wang, Zhu wrote: > Hello, > > In my R package I would like a Fortran subroutine to compute the same value > as pnorm does in R. I didn't find out an existing Fortran pnorm subroutine. > Perhaps a Fortran subroutine can somehow call R function pnorm, but I would > like advice on how to do this correctly. This is described in the Writing R Extensions manual, Ch 6, The R API: entry points for C code. As the title suggests, it's mainly written for calling things like pnorm() from C, but section 6.6 talks about calling C functions from Fortran. You probably also have the erf() function available in Fortran; it's a linear transformation of pnorm(). That is, erf(x) = 2*pnorm(x*sqrt(2)) - 1 Duncan Murdoch ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel
