>
          <b>HERMITE_INTEGRAL</b> returns the value of a Hermite polynomial integral.
        </li>
        <li>
          <b>HERMITE_RECUR</b> finds the value and derivative of a Hermite polynomial.
        </li>
        <li>
          <b>HERMITE_ROOT</b> improves an approximate root of a Hermite polynomial.
        </li>
        <li>
          <b>I4_FACTORIAL2</b> computes the double factorial function.
        </li>
        <li>
          <b>P00_EXACT</b> returns the exact integral for any problem.
   