e leading P-by-M part of this array must
          contain the matrix D.
          If JOBD = 'Z', the array D is not referenced.

  LDD     INTEGER
          The leading dimension of array D.
          LDD &gt;= MAX(1,P), if JOBD = 'D';
          LDD &gt;= 1,        if JOBD = 'Z'.

  NZ      (output) INTEGER array, dimension (LDNZ,M)
          The leading P-by-M part of this array contains the numbers
          of zeros of the elements of the transfer function
          matrix G. Specifically, the (i,j) ele