carlapp

CARLAPP Carlson's approximation of the fractional-order transfer function G(s)^(1/M)

 Usage: H = CARLAPP(M, N, G, G0, RETOL),

      where M is the denominator of ALPHA = 1/M, where ALPHA is
            approximated by G(s)^ALPHA and N is the order of
            approximation,
             G is the optional function G(s) taken as G(s) = s by default,
            G0 is the initial solution, if omitted or empty considered to
            be zpk('1'),
            RETOL is the tolerance for model reduction using a matching
            zero-pole reduction method realized by applying the minreal()
            function.