03-May-2023 08:05:20 kdv_ift_test(): MATLAB/Octave version 5.2.0. kdv_ift() solves the Korteweg-deVries equation using the FFT method with an integrating factor. Graphics saved as "kdv_ift_test.png" kdv_ift_test(): Normal end of execution. 03-May-2023 08:05:21