Fourier Transforms

Fast fourier transforms using the FFTW library. More...

Classes
class	ndarray::FourierTransform< T, N >
	A wrapper for FFTW plans for fast Fourier transforms. More...

Functions
template<typename T , int N, int C>
void	ndarray::shift (Vector< T, N > const &offset, Array< std::complex< T >, N, C > const &array, int const real_last_dim)
	Perform a Fourier-space translation transform. More...
template<typename T , int N, int C>
void	ndarray::differentiate (int n, Array< std::complex< T >, N, C > const &array, int const real_last_dim)
	Numerically differentiate the array in Fourier-space in the given dimension. More...

Detailed Description

Fast fourier transforms using the FFTW library.

Function Documentation

template<typename T , int N, int C>

void ndarray::differentiate	(	int	n,
		Array< std::complex< T >, N, C > const &	array,
		int const	real_last_dim
	)

Numerically differentiate the array in Fourier-space in the given dimension.

Definition at line 165 of file FourierOps.h.

  {
    detail::FourierOps<T,N>::differentiate(N-n, array.deep(), real_last_dim);
}

template<typename T , int N, int C>

void ndarray::shift	(	Vector< T, N > const &	offset,
		Array< std::complex< T >, N, C > const &	array,
		int const	real_last_dim
	)

Perform a Fourier-space translation transform.

Examples:

tunnelDs9.

Definition at line 146 of file FourierOps.h.

  {
    detail::FourierOps<T,N>::shift(
        offset.begin(),
        static_cast< std::complex<T> >(1),
        array.deep(),
        real_last_dim
    );
}