turns some values of the hypergeometric function 1F1.
        </li>
        <li>
          <b>HYPER_2F1_VALUES</b> returns some values of the hypergeometric function 2F1.
        </li>
        <li>
          <b>HYPERGEOMETRIC_CDF_VALUES</b> returns some values of the hypergeometric CDF.
        </li>
        <li>
          <b>HYPERGEOMETRIC_PDF_VALUES</b> returns some values of the hypergeometric PDF.
        </li>
        <li>
          <b>HYPERGEOMETRIC_U_VALUES:</b> some values of the hypergeometric func