Provides a simple and efficient wrapper around the fastest
Fourier transform in the west (FFTW) library <http://www.fftw.org/>.

This package is a wrapper for certain fftw functions.
Please see the fftw package for additional tools. This package
provides access to the two-dimensional fft, the multivariate
fft, and the one-dimensional real to complex fft using fftw3.
The fft functions can be specified to not return the Hermitian
conjugate of real data, and both the one-dimensional and
multivariate fft functions can be inverted without the
Hermitian conjugate. Please see the package fftw for general
one-dimensional use of fftw, the discrete cosine transform, and
for more detailed use of performancing enhancing plans when
using fftw.

Wrapper for 'FFTW3' Includes: One-Dimensional, Two-Dimensional,
Three-Dimensional, and Multivariate Transforms
fftw3 (libfftw3-dev (deb), or fftw-devel (rpm))
Provides a wrapper for several 'FFTW' functions. This package provides access to the two-dimensional 'FFT', the multivariate 'FFT', and the one-dimensional real to complex 'FFT' using the 'FFTW3' library. The package includes the functions fftw() and mvfftw() which are designed to mimic the functionality of the R functions fft() and mvfft(). The 'FFT' functions have a parameter that allows them to not return the redundant complex conjugate when the input is real data.

This package is a wrapper for several fftw functions.
Please see the fftw package for additional tools. This package
provides access to the two-dimensional fft, the multivariate
fft, and the one-dimensional real to complex fft using fftw3.
The fft functions have a parameter that allows them to not
return the redundant complex conjugate when the input is real
data. The one-dimensional and multivariate fft functions can be
inverted without the redundant complex conjugate. Please see
the package fftw for general one-dimensional use of fftw, the
discrete cosine transform, and for more detailed use of
performance enhancing plans when using fftw.