ules have problems with many of the test integrands, which have
      endpoint singularities.</i>
      <ul>
        <li>
          <a href = "../../datasets/sparse_grid_cc/sparse_grid_cc.html">
          sparse_grid_cc.html</a>,
          describes the Clenshaw Curtis sparse grid rules.
        </li>
        <li>
          <a href = "sparse_grid_cc_output.txt">
          sparse_grid_cc_output</a>,
          the output from running the test on the 2D rules.
        </li>
      </ul>
    </p>

    <p>
      