Uhhhh, Evan Miller here. Not sure why my name is in the submitted title, but whatever.

The current selection on that page is somewhat limited, but I hope to grow it over time. The stuff at the beginning is pretty basic (e.g. standard deviation), but things get pretty gnarly by the time you get to the Kiefer equation. At some point I'll add some more references on how to implement things, e.g. find successive zeros of Bessel equations. For now it should be a good jumping-off point. Enjoy!