fftw

function for determining FFT algorithm.

Syntax

• m = fftw('planner')
• fftw('planner', m)
• w = fftw('dwisdom')
• fftw('dwisdom', w)
• w = fftw('swisdom')
• fftw('swisdom', w)

Input argument

• m - method for setting transform parameters: 'estimate', 'measure', 'patient', 'exhaustive', or 'hybrid'.
• w - a string: wisdom data.

Output argument

• m - method: 'estimate', 'measure', 'patient', 'exhaustive', or 'hybrid'.
• w - a string: wisdom data.

Description

The default method is 'estimate'.

Example

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

See also

fft, ifft.

History

Author

Allan CORNET