       <li>
          <b>DNRM2</b> returns the euclidean norm of a vector.
        </li>
        <li>
          <b>DROT</b> applies a plane rotation.
        </li>
        <li>
          <b>DROTG</b> constructs a Givens plane rotation.
        </li>
        <li>
          <b>DSCAL</b> scales a vector by a constant.
        </li>
        <li>
          <b>DSVDC</b> computes the singular value decomposition of a real rectangular matrix.
        </li>
        <li>
          <b>DSWAP</b> interchanges two vector