sympy/sympy — pull request #2077 by cheatiiit (2013-05-04 20:16:52+00:00)
Title: Moved Extended Euclidean Algorithm from risch.py to densetools.py

Moved Extended Euclidean Algorithm, Diophantine version that is gcdex_diophantine from risch.py in integral module to densetools.poly in polys module