   possible. The values on the diagonal are of arbitrary size.
              HSL subroutine MC21A/AD is used for this.
        = 2 : Compute a row permutation of the matrix so that the smallest 
              value on the diagonal of the permuted matrix is maximized.
        = 3 : Compute a row permutation of the matrix so that the smallest
              value on the diagonal of the permuted matrix is maximized.
              The algorithm differs from the one used for JOB = 2 and may
              have qui