24-Dec-2022 09:22:05 bicg_test(): MATLAB/Octave version 9.8.0.1380330 (R2020a) Update 2. Test bicg(). In order to avoid conflict with the built-in bicg() function this code was renamed bicg_mine(). bicg_helmert(): Test bicg() on the Helmert matrix. Number of variables N = 10 Estimated condition number = 1 Norm of residual |Ax-b| = 1.19518e-08 Norm of error |x1-x2| = 1.19518e-08 bicg_lesp(): Test bicg() on the Lesp matrix. Number of variables N = 100 Estimated condition number = 67.4852 Full iteration number = 1 Norm of residual |Ax-b| = 7.54353e-05 Norm of error |x1-x2| = 4.511e-07 Full iteration number = 2 Norm of residual |Ax-b| = 4.71708e-06 Norm of error |x1-x2| = 2.84022e-08 bicg_invol(): Test bicg() on the invol matrix. Number of variables N = 20 Estimated condition number = 8.21156e+20 Full iteration number = 1 Norm of residual |Ax-b| = 1.09179e+14 Norm of error |x1-x2| = 9.42815e+16 Full iteration number = 2 Norm of residual |Ax-b| = 3.24112e+22 Norm of error |x1-x2| = 8.95983e+16 bicg_test(): Normal end of execution. 24-Dec-2022 09:22:05