pynac 0.7.26 Sage fork of GiNaC

Pynac is a derivative of the C++ library GiNaC, which allows manipulation of symbolic expressions. It currently provides the backend for symbolic expressions in Sage. The main difference between Pynac and GiNaC is that Pynac relies on Sage to provide the operations on numerical types, while GiNaC depends on CLN for this purpose.