sympy/sympy — pull request #1028 by smichr (2012-02-02 09:44:28+00:00)
Title: 2105

This solves some pesky evaluation problems, especially issue 2105, evalf(n=1) related, and 1857. It really needs to be looked over by someone who understands what is going on in the evalf process.

@fredrik-johansson or @vks , anybody else that's interested (@mattpap who made some precision tracking changes). I suspect this will take some discussion before it's ready to be committed.