CLPoles:

--------------------------------------------------------------------------
   Computes the closed loop poles.

   Computes the closed loop poles for a control system

   z =  f*z - g*y
   u  =  h*z - k*y

   The plant is assumed to be in the form

   x = a*x + b*u
   y  = c*x

   Automatically reduces the order of the system.

   Since version 1.
--------------------------------------------------------------------------
   Form:
   z = CLPoles( a, b, c, f, g, h, k )
--------------------------------------------------------------------------

   ------
   Inputs
   ------
   [a,b,c] 		Plant matrices
   [f,g,h,k] 	Controller matrices

   -------
   Outputs
   -------
   z   		    Closed loop poles

--------------------------------------------------------------------------