hmatrix-gsl-0.16.0.2: Numerical computation
Numeric.GSL.Fourier
Description
Fourier Transform.
http://www.gnu.org/software/gsl/manual/html_node/Fast-Fourier-Transforms.html#Fast-Fourier-Transforms
Synopsis
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.
Vector
(
Complex
Double
)
>>> fft (fromList [1,2,3,4]) fromList [10.0 :+ 0.0,(-2.0) :+ 2.0,(-2.0) :+ 0.0,(-2.0) :+ (-2.0)]
>>>
fft (fromList [1,2,3,4])
ifft :: Vector (Complex Double) -> Vector (Complex Double) Source
The inverse of fft, using gsl_fft_complex_inverse.
fft