wrap.m</a>
          forces an I4 to lie between given limits by wrapping.
        </li>
        <li>
          <a href = "lyness_order.m">lyness_order.m</a>
          returns the order of a Lyness quadrature rule.
        </li>
        <li>
          <a href = "lyness_precision.m">lyness_precision.m</a>
          returns the precision of a Lyness quadrature rule.
        </li>
        <li>
          <a href = "lyness_rule.m">lyness_rule.m</a>
          returns the points and weights of a Lyness quadrature 