29 November 2023   8:02:54.307 PM

backward_euler_test():
  Fortran90 version
  Test backward_euler().

predator_prey_test()

  A pair of ordinary differential equations for a population
  of predators and prey are solved using backward_euler().

  The exact solution shows periodic behavior, with a fixed
  period and amplitude.
 
  predator_prey_test: data stored in "predator_prey_data.txt".
  predator_prey_test: plot commands stored in "predator_prey_commands.txt".

stiff_test():
  Solve stiff ODE using backward_euler()
 
  plot2: data stored in "stiff_data1.txt" and "stiff_data2.txt".
  plot2: plot commands stored in "stiff_commands.txt".

backward_euler_test():
  Normal end of execution.

29 November 2023   8:02:54.311 PM