[R-pkg-devel] Including "Rmath.h" in C code for an R package

[Iris Simmons]

To avoid the remapping of beta to Rf_beta, you should
define R_NO_REMAP_RMATH before you include Rmath:

#define R_NO_REMAP_RMATH
#include <Rmath.h>

On Sun, Jun 2, 2024, 19:33 Gregory Raskind <graskind1 using gmail.com> wrote:

> Hi,
>
> I'm extending an R package that uses the R C API directly. I'd like to use
> some distribution functions, so I included the "Rmath.h" header. The issue
> is that this introduces macros that have unintended consequences for the
> code. For example, I have a local variable named "beta", which is expanded
> to "Rf_beta".
>
> Is there a way of including the "Rmath.h" header without applying the
> macros to my code? E.g. if I want to use the beta function, I would use it
> with "Rf_beta(a,b)", but "beta" would remain my local variable.
>
> Thanks for your time!
>
> Best,
> Greg
>
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