fix numeric overflow fix non-convergence in tests
fix numeric overflow
fix non-convergence in tests

UDST/urbansim,AZMAG/urbansim,synthicity/urbansim,UDST/urbansim,synthicity/urbansim,UDST/urbansim,AZMAG/urbansim,synthicity/urbansim,AZMAG/urbansim,UDST/urbansim,AZMAG/urbansim,synthicity/urbansim