23 June 2025 11:12:20 AM stiff_exact_test(): C version Test stiff_exact(), which evaluates exact solutions of a stiff ODE. Initial parameters: lambda = 50 t0 = 0 y0 = 0 tstop = 1 stiff_ode_test: data stored in 'stiff_value_data1.txt', 'stiff_value_data2.txt', 'stiff_value_data3.txt', and 'stiff_value_data3.txt'. stiff_exact_test: plot commands stored in "stiff_value_commands.txt". stiff_euler_test(): Solve stiff ODE using the Euler method. Parameters: lambda = 50 t0 = 0 y0 = 0 tstop = 1 stiff_ode_test: data stored in 'stiff_euler_data1.txt' and 'stiff_euler_data2.txt'. stiff_ode_test: plot commands stored in "stiff_euler_commands.txt". stiff_exact_test(): Normal end of execution. 23 June 2025 11:12:20 AM