C2DFOH:

--------------------------------------------------------------------------
   Create a discrete time system using a first order hold.

   Create a discrete time system from a continuous system
   assuming a first-order-hold at the input.

   Given
   .
   x = ax + bu

   Since version 1.
--------------------------------------------------------------------------
   Form:
   [f, g] = C2DFOH( a, b, T )
--------------------------------------------------------------------------

   ------
   Inputs
   ------
   a            (n,n)  Continuous plant matrix
   b            (n,m)  Input matrix
   T            (1,1)  Time step

   -------
   Outputs
   -------
   f            (n,n)  Discrete plant matrix
   g            (n,m)  Discrete input matrix

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