Complex arithmetic seems to be part of "src/main/complex.c" (all of main is not exposed to developers).
Rcpp does have quite a bit (if not all?) of the complex math implemented already though, so if you are not set on using C, you could instead work with ComplexVectors in Rcpp (see the online documentation: https://dirk.eddelbuettel.com/code/rcpp/html/namespaceRcpp_1_1internal.html#a7900c9d2c2c77396b9c0ad9340071c29). If worse comes to worse and something you need isn't implemented, you could check if it is implemented in std::complex. Oliver On Sat, Feb 27, 2021 at 6:04 AM Andrew Simmons <akwsi...@gmail.com> wrote: > Hello, > > > I've been trying to translate some of my slow R code into C code, and I > need the complex math functions to be able to do this. I assumed I could > access them with > > #include <R_ext/Complex.h> > > but it seems as though that file only contains the definition of structure > Rcomplex. Any help accessing these functions would be greatly appreciated! > > [[alternative HTML version deleted]] > > ______________________________________________ > R-package-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-package-devel > [[alternative HTML version deleted]] ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel