        <li>
          <b>ALIGN_ENUM</b> counts the alignments of two sequences of M and N elements.
        </li>
        <li>
          <b>ARC_COSINE</b> computes the arc cosine function, with argument truncation.
        </li>
        <li>
          <b>ARC_SINE</b> computes the arc sine function, with argument truncation.
        </li>
        <li>
          <b>ATAN4</b> computes the inverse tangent of the ratio Y / X.
        </li>
        <li>
          <b>BELL</b> returns the Bell numbers from 0 to N.