inates. <code>MAG0</code> and
        <code>PHASE0</code> are the magnitude and the phase of the nth bin in the
        first <code>ABUFFER</code> respectively, <code>MAG1</code> and
        <code>PHASE1</code> for the bin in the second <code>ABUFFER</code>, etc.
        There is also the <code>DOFFT-COMPLEX</code> macro for the calculations
        in complex coordinates, and the more flexible <code>DOFFT</code> macro.
      </p>

      <p>
        <code>IFFT-OUTPUT</code> returns the next sample of the la