ay contains the input
          matrix Bc of the closed-loop system.

  LDBC    INTEGER
          The leading dimension of array BC.  LDBC &gt;= MAX(1,N).

  CC      (output) DOUBLE PRECISION array, dimension (LDCC,N)
          The leading PZ-by-N part of this array contains the
          system output matrix Cc of the closed-loop system.

  LDCC    INTEGER
          The leading dimension of array CC.
          LDCC &gt;= MAX(1,PZ) if N &gt; 0.
          LDCC &gt;= 1 if N = 0.

  DC      (output) DOUBLE PRE