[SciPy-dev] Lambert W implementation

Skipper Seabold jsseabold@gmail....
Thu Oct 29 13:54:31 CDT 2009


On Thu, Oct 29, 2009 at 1:04 PM, Yosef Meller <mellerf@netvision.net.il> wrote:
> Hello,
>
> I searched through scipy.special and I saw no implementation of the
> Lambert W function. I'd like to add one, but before I do I thought I'd ask:
>
> 1) Did I just miss it?
> 2) Is there any implementation you know off that is suitable for
> wrapping or a good reference for an algorithm (I can find some, but if
> there's something well known...)

There's a Python example on the wikipedia page for Lambert W that
works for W(x) where x >= -1/e.  There's probably more information in
the references for more general implementations and/or improved
accuracy.


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