The input values of this block are the rectangular components
u_re and u_im of a phasor in two dimensions.
This block calculates the length y_abs and
the angle y_arg of the polar representation of this phasor.
y_abs = abs(u_re + j*u_im) = sqrt( u_re2 + u_im2 ) y_arg = arg(u_re + j*u_im) = atan2(u_im, u_re)