 L)</tt></p>
<h2>Description</h2>
<p>
<tt>iqfft(X, A, L)</tt> computes the inverse Quaternion Fast Fourier Transform
of the quaternion vector <tt>X</tt> using transform axis <tt>A</tt>
(direction in 3-space). If <tt>X</tt> is a matrix, the inverse transforms of the
columns are computed.
</p>
<p>
<tt>L</tt> specifies the handedness of the transform ('L' or 'R') -
determined by the position of the complex exponential relative to <tt>X</tt>.
(<tt>'L'</tt> gives a transform with the exponential on the left of
t