title: Armadillo ifft dimension
body: <p>Does Armadillo <a href="http://arma.sourceforge.net/docs.html#fft" rel="nofollow">ifft</a> support "dim" as <a href="http://www.gnu.org/software/octave/doc/v4.0.1/Signal-Processing.html" rel="nofollow">Octave/Matlab</a>?</p>