Re: Re[4]: non linear regressions and histograms.

[Morten Welinder <mwelinder gmail com>]

>     >>> help(atanh)
>     Traceback (most recent call last):
>       File "<stdin>", line 1, in ?
>     NameError: name 'atanh' is not defined

This just shows that atanh is not available at the Python level.  Presumably
it is used somewhere at the C level.  In any case, I just browsed the source
for a few moments.

For what it is worth, much of our numerical stuff comes from R and we feed
our improvements slowly back to them.  See http://www.r-project.org/

M.