es which return sample values of various functions,
      including the modified beta function, and the logarithm of the
      gamma function.
    </p>

    <h3 align = "center">
      Usage:
    </h3>

    <p>
      <dl>
        <dt>
          w = <b>wew ( x, en )</b>
        </dt>
        <dd>
          where <b>X</b>, is the argument, <b>EN</b> is the last correction
          to the output value made by the Newton iteration, and the value
          of W(<b>X)</b>) is returned in <b>WEW</b>.
        </dd