Re: [Rd] precision when calling a C function; presence of Fortran call

From: Benjamin Tyner <>
Date: Tue 19 Dec 2006 - 22:28:47 GMT

Thanks! It seems the 'volatile' declaration is exactly what was needed.


Prof Brian Ripley wrote:
> In C, declaring a value as 'volatile' should force it to be stored in
> a 64-bit memory location. There is no known way to do this in Fortran:
> compilers and numeric software have been playing leapfrog games for
> years.
> What you can do with gcc (the compiler collection) is to compile a
> module with -ffloat-store, as we do with dlamc.f.
> mailing list Received on Wed Dec 20 23:52:47 2006

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