hmatrix-0.15.2.1: Linear algebra and numerical computation

Copyright(c) Alberto Ruiz 2006
LicenseGPL-style
MaintainerAlberto Ruiz (aruiz at um dot es)
Stabilityprovisional
Portabilityuses ffi
Safe HaskellNone
LanguageHaskell98

Numeric.GSL.Fourier

Description

Fourier Transform.

http://www.gnu.org/software/gsl/manual/html_node/Fast-Fourier-Transforms.html#Fast-Fourier-Transforms

Synopsis

Documentation

fft :: Vector (Complex Double) -> Vector (Complex Double) Source

Fast 1D Fourier transform of a Vector (Complex Double) using gsl_fft_complex_forward. It uses the same scaling conventions as GNU Octave.

> fft (fromList [1,2,3,4])
vector (4) [10.0 :+ 0.0,(-2.0) :+ 2.0,(-2.0) :+ 0.0,(-2.0) :+ (-2.0)]

ifft :: Vector (Complex Double) -> Vector (Complex Double) Source

The inverse of fft, using gsl_fft_complex_inverse.