Fast Fourier transform: Difference between revisions
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Fast Fourier transform
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Revision as of 09:15, 4 August 2020
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09:15, 4 August 2020
→Simple recursive implementation
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Line 42:
Line 42:
(odd+T),odd-T←even×exp
(odd+T),odd-T←even×exp
}
}
ifft←{(≢⍵)÷⍨+fft(+⍵)}
test←{⎕←'Error: ',⍕⌈/(10○⊢)(⍵-ifft fft ⍵)}
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{{Works in|[[Dyalog APL]]}}
{{Works in|[[Dyalog APL]]}}
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