Describe the bug:

In iteratefdtd_matrix.m file (in TDMS/tdms/tests/system/data/input_generation/matlab), in line 20, the value of Dxl in input_file is passed to Dxu and the same error also occurs in Dxl, Dyu, Dyl, Dzu, Dzl. The attached code is from iteratefdtd_matrix.m. It causes wrong position of PML layer when setting the simulation.

[delta, I, J, K, n, R0, ...
Dxu, Dxl, Dyu, Dyl, Dzu, Dzl, ...
dt, epsr, mur, f_an, Nt, ...
interface, efname, hfname, wavelengthwidth, ...
illorigin, sourcemode, exphasorsvolume, exphasorssurface, ...
phasorsurface, exdetintegral, outputs_array] = get_from_input_file(input_file, struct(), ...
'delta','I','J','K','n','R0',...
'Dxl','Dxu','Dyl','Dyu','Dzl','Dzu',...
'dt','epsr','mur','f_an','Nt',...
'interface','efname','hfname','wavelengthwidth',...
'illorigin','sourcemode','exphasorsvolume','exphasorssurface',...
'phasorsurface', 'exdetintegral', 'outputs_array')