Dear list,

I’m trying to register Fortran routines in randtoolbox (in srt/init.c file), 
see 
https://r-forge.r-project.org/scm/viewvc.php/pkg/randtoolbox/src/init.c?view=markup&root=rmetrics.
 

Reading 
https://cran.r-project.org/doc/manuals/r-release/R-exts.html#Registering-native-routines
 and looking at what is done in stats package, I first thought that the 
following code will do the job:

static const R_FortranMethodDef FortEntries[] = {
 {"halton", (DL_FUNC) &F77_NAME(HALTON),  7},
 {"sobol", (DL_FUNC) &F77_NAME(SOBOL),  11},
 {NULL, NULL, 0}
};

But I got error messages when building : use of undeclared identifier ‘SOBOL_’. 
I also tried in lower case sobol and halton.

Looking at expm package 
https://r-forge.r-project.org/scm/viewvc.php/pkg/src/init.c?view=markup&revision=94&root=expm,
 I try  

static const R_FortranMethodDef FortEntries[] = {
 {"halton", (DL_FUNC) &F77_SUB(HALTON),  7},
 {"sobol", (DL_FUNC) &F77_SUB(SOBOL),  11},
 {NULL, NULL, 0}
};

But the problem remains the same.

Is there a way to have header file for Fortran codes? how to declare routines 
defined in my Fortran file src/LowDiscrepancy.f?

Any help appreciated

Regards, Christophe
---------------------------------------
Christophe Dutang
LMM, UdM, Le Mans, France
web: http://dutangc.free.fr

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