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Many thanks,
it doesn't matter it's not the best one, I just need to compute exactly the
same one in a C++ code for a test ...
Baillp
slr### [at] fwi com...
> On Thu, 5 Oct 2000 15:43:18 +0200, Pascal Baillehache wrote:
> >Hi all
> >what I need is the exact algorithm used in the POV rand() function, where
> >can I found this ?
>
> In the source code. Specifically, the function stream_rand() in
express.c.
> It's short, so I'll quote it here. Note that it isn't the best prng in
the
> world, and it probably fails whole truckloads of tests for randomness, but
> remember that it was added almost as an afterthought to 3.0 and hasn't
been
> thought of much since then. Anyway, here ya go:
>
> static DBL stream_rand(int stream)
> {
> next_rand[stream] = next_rand[stream] * 1812433253L + 12345L;
>
> return((DBL)(next_rand[stream] & 0xFFFFFFFFUL) / 0xFFFFFFFFUL);
> }
>
>
> --
> Ron Parker http://www2.fwi.com/~parkerr/traces.html
> My opinions. Mine. Not anyone else's.
> Proudly not helping RIAA and SDMI steal my rights --
> http://www.eff.org/Misc/EFF/Newsletters/EFFector/HTML/effect13.08.html
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