Thu Feb  3 20:08:40 2022

polar_ode_test():
  Python version: 3.6.9
  Solve polar_ode(), an ordinary differential equation (ODE)
  involving a complex variable, whose solution is best 
  viewed in a polar coordinate plot.

  parameters:
    t0    =  0.0
    z0    =  [1.+0.j]
    tstop =  18.84955592153876

polar_solve_ivp():
  Solve polar_ode() using solve_ivp().
  Graphics saved as "polar_solve_ivp_phase.png"
  Graphics saved as "polar_solve_ivp_time.png"
  RMS error norm =  0.0041929541557481
  L2 error norm =  0.04213866775033035

polar_ode_test():
  Normal end of execution.
Thu Feb  3 20:08:40 2022