 <b>C8_MAGNITUDE</b> returns the magnitude of a C8.
        </li>
        <li>
          <b>C8_SQRT</b> returns the principal square root of a C8.
        </li>
        <li>
          <b>CARDAN</b> evaluates the Cardan polynomials.
        </li>
        <li>
          <b>CARDAN_POLY_COEF</b> computes the coefficients of the N-th Cardan polynomial.
        </li>
        <li>
          <b>CATALAN</b> computes the Catalan numbers, from C(0) to C(N).
        </li>
        <li>
          <b>CATALAN_CONSTANT</b> 