Lines Matching refs:FFT

23   * #include <unsupported/Eigen/FFT>
40   * half-spectrum for real FFT.
44   * We think the default behavior of Eigen/FFT should favor correctness and
51   * IFFT(FFT(x)) = Kx;  this is done to avoid a vector-by-value multiply.  
55   * How Eigen/FFT differs: invertible scaling is performed so IFFT( FFT(x) ) = x. 
57   * 2) Real FFT half-spectrum
59   * sample for the Nyquist bin) for a real FFT, the other half is the 
64   * How Eigen/FFT differs: The full spectrum is returned from the forward 
74 #  include "src/FFT/ei_fftw_impl.h"
82 #  include "src/FFT/ei_imklfft_impl.h"
89 # include "src/FFT/ei_kissfft_impl.h"
159 class FFT
175     FFT( const impl_type & impl=impl_type() , Flag flags=Default ) :m_impl(impl),m_flag(flags) { }
257     fft_fwd_proxy< MatrixBase<InputDerived>, FFT<T_Scalar,T_Impl> >
260       return fft_fwd_proxy< MatrixBase<InputDerived> ,FFT<T_Scalar,T_Impl> >( src, *this,nfft );
265     fft_inv_proxy< MatrixBase<InputDerived>, FFT<T_Scalar,T_Impl> >
268       return  fft_inv_proxy< MatrixBase<InputDerived> ,FFT<T_Scalar,T_Impl> >( src, *this,nfft );
302       if (nfft<1) { //automatic FFT size determination