,ALPHA)(X).
        </li>
        <li>
          <b>GEGENBAUER_POLY_VALUES</b> returns some values of the Gegenbauer polynomials.
        </li>
        <li>
          <b>GEN_HERMITE_POLY</b> evaluates the generalized Hermite polynomials at X.
        </li>
        <li>
          <b>GEN_LAGUERRE_POLY</b> evaluates generalized Laguerre polynomials.
        </li>
        <li>
          <b>GUD</b> evaluates the Gudermannian function.
        </li>
        <li>
          <b>GUD_VALUES</b> returns some values of 