added line to gmres_prolongation_smoothing() in smooth.py to remove divide by zero warning during unit tests...this wasn't an error, just an annoying warning during the unit tests
added line to gmres_prolongation_smoothing() in smooth.py to remove divide by zero warning during unit tests...this wasn't an error, just an annoying warning during the unit tests
pombreda/pyamg,pombreda/pyamg,pombreda/pyamg,pombreda/pyamg