EG = 'D', the number of linearly independent columns
          in the generator as returned by MB02CU.  0 &lt;= RNK &lt;= K.
          If TYPEG = 'C' or 'R', the value of this parameter is
          irrelevant.

  A1      (input)  DOUBLE PRECISION array, dimension
          (LDA1, K)
          On entry, if TYPEG = 'D', the leading K-by-K part of this
          array must contain the matrix A1 as returned by MB02CU.
          If TYPEG = 'C' or 'R', this array is not referenced.

  LDA1    INTEGER
          T