scipy/scipy — pull request #234 by endolith (2012-05-31 23:37:19+00:00)
Title: add abs() to generalized Gaussian so it works for values like p = 0.5 or...

... 1.2 (which currently produce NaNs or asymmetrical windows)

I think this is the same as https://en.wikipedia.org/wiki/Generalized_normal_distribution, which has abs(x-mu) in the PDF formula