06 October 2025   6:50:33.233 PM

stiff_ode_test():
  Fortran90 version
  Test stiff_ode(), using euler(), euler_backward(), midpoint().

  Parameters:
    lambda =    50.0000    
    t0     =    0.00000    
    y0     =    0.00000    
    tstop  =    1.00000    

stiff_euler_test():
  Solve stiff ODE using the Euler method.
 
  plot2: data stored in "stiff_euler_data1.txt" and "stiff_euler_data2.txt".
  plot2: plot commands stored in "stiff_euler_commands.txt".

stiff_backward_euler_test():
  Solve stiff ODE using the backward Euler method.
 
  plot2: data stored in "stiff_euler_backward_data1.txt" and "stiff_euler_backward_data2.txt".
  plot2: plot commands stored in "stiff_euler_backward_commands.txt".

stiff_midpoint_test():
  Solve stiff ODE using the midpoint method.
 
  plot2: data stored in "stiff_midpoint_data1.txt" and "stiff_midpoint_data2.txt".
  plot2: plot commands stored in "stiff_midpoint_commands.txt".

stiff_ode_test():
  Normal end of execution.
06 October 2025   6:50:33.234 PM