Where can I inspect Python's math functions?

Question

I would like to look at the way Python does computes square roots, so I tried to find the definition for math.sqrt(), but I can\'t find it anywhere. I have look

Answer 1

A simple grep over the code would have helped:

http://svn.python.org/view/python/trunk/Modules/cmathmodule.c?revision=76978&view=markup