ar part, respectively, of the symmetric
          state weighting matrix Q. The stricly lower triangular
          part (if UPLO = 'U') or stricly upper triangular part (if
          UPLO = 'L') is not referenced.
          If FACT = 'C' or 'B', the leading P-by-N part of this
          array must contain the output matrix C of the system.
          If JOBB = 'B' and SCAL = 'G', then Q is modified
          internally, but is restored on exit.

  LDQ     INTEGER
          The leading dimension of array Q.
 