09 May 2025 9:19:54.974 PM midpoint_explicit_test(): FORTRAN90 version Test midpoint_explicit() on several ODE's. predator_prey_midpoint_explicit_test A pair of ordinary differential equations for a population of predators and prey are solved using midpoint_fixed(). The exact solution shows periodic behavior, with a fixed period and amplitude. predator_prey_midpoint_explicit_test: data stored in "predator_prey_midpoint_explicit_data.txt". predator_prey_midpoint_explicit_test: plot commands stored in "predator_prey_midpoint_explicit_commands.txt". stiff_midpoint_explicit_test Solve stiff ODE using midpoint_explicit(). plot2: data stored in "stiff_midpoint_explicit_data1.txt" and "stiff_midpoint_explicit_data2.txt". plot2: plot commands stored in "stiff_midpoint_explicit_commands.txt". midpoint_explicit_test(): Normal end of execution. 09 May 2025 9:19:54.975 PM