13 October 2025 10:15:10 AM doughnut_exact_test(): C++ version Test doughnut_exact(), which evaluates exact solutions of the doughnut ODE. Parameter values: m = 3 n = 5 t0 = 0 y0 = 1, 1, 3 tstop = 10 Created data file 'doughnut_exact_data.txt'. Created command file 'doughnut_exact_commands.txt' doughnut_exact_test(): Normal end of execution. 13 October 2025 10:15:10 AM