<< fftshift

FFTW

FFTWwrapper >>

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fftw

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function for determining FFT algorithm.

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Syntax

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m = fftw('planner')

fftw('planner', m)

w = fftw('dwisdom')

fftw('dwisdom', w)

w = fftw('swisdom')

fftw('swisdom', w)

Input argument

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m

method for setting transform parameters: 'estimate', 'measure', 'patient', 'exhaustive', or 'hybrid'.

w

a string: wisdom data.

Output argument

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m

method: 'estimate', 'measure', 'patient', 'exhaustive', or 'hybrid'.

w

a string: wisdom data.

Description

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The default method is 'estimate'.

Example

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w = fftw('dwisdom')
M = rand(1000);
tic; fft(M); toc
fftw('dwisdom', w)
tic; fft(M); toc

See also

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fft, ifft.

History

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Version	Description
1.0.0	initial version

Author

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Allan CORNET