utines:
    </h3>

    <p>
      <ul>
        <li>
          <b>R4_EXP</b> returns an exponentially distributed single precision real value.
        </li>
        <li>
          <b>R4_EXP_SETUP</b> sets data needed by R4_EXP.
        </li>
        <li>
          <b>R4_NOR</b> returns a normally distributed single precision real value.
        </li>
        <li>
          <b>R4_NOR_SETUP</b> sets data needed by R4_NOR.
        </li>
        <li>
          <b>R4_UNI</b> returns a uniformly distributed real va