[R] GetRNGstate() crashes in Windows

[Ju-Sung Lee]

I think I've misread the intent of the GetRNGstate() and other API 
functions; these only work when embedded in C functions eventually called 
from R.  Apologies for the mistake.

On Tue, 28 Jun 2005, Ju-Sung Lee wrote:

> Hi,
>
> Has anyone managed to successfully call GetRNGstate() / PutRNGstate()
> without crashing in a Windows environment (spec. XP)?  I've compiled
> successfully using both the latest Cygwin, latest Mingw, and the version
> of Mingw suggested in "Building R for Windows" website, but when the
> executable runs, it crashes; the functions themselves can run when I omit
> GenRNGstate()/PutRNGstate, but return the same values every time.  My
> compilation command is, having copied R.dll to my current directory:
>
> gcc -o prog.exe prog.c -I{R's include path} R.dll
>
> I've also tried:
>
> gcc -o prog.exe prog.c -I{R's include path} -L./ -lR
>
> I've managed to successfully compile Rmath.dll and call R functions that
> way, but remain puzzled why the first way doesn't work.  I've read mention
> of "initializing" R (within a C program I assume) but haven't found the
> documentation that explains this.
>
> My test program is simply:
> #include <R.h>
> int main() {
>   GetRNGstate();
>   PutRNGstate();
>   return 0;
> }
>
> I've also tried #include-ing host of the other .h files.   Thanks!
>
> Juice
>
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