s/quadrature_rules_legendre/leg_o8_exact.txt">leg_o8_exact.txt</a>,
          the results of the exactness test.
        </li>
          the results of the command 
          <blockquote><b>
            legendre_exactness ( 'leg_o8', 18 )
          </b></blockquote>
      </ul>
    </p>

    <p>
      <b>LEG_O16</b> is a standard Gauss-Legendre order 16 rule.
      <ul>
        <li>
          <a href = "../../datasets/quadrature_rules_legendre/leg_o16_x.txt">
          leg_o16_x.txt</a>,
          the absci