[GiNaC-list] Inverse of complex matrix

Sometimes, inverting a matrix with complex values does not produce something that, when multiplied by the original, returns the identity. I have attached a program that demonstrates this for one case, which was found by altering checks/check_matricies.cpp to use complex values from sparse_tree(). Is this a known problem? Thanks, -Jonathan Brandmeyer P.S: GiNaC 1.3.0, G++ 3.3.4+ (Debian), CLN 1.1.8, Debian Sid on i386