6a1efe3b5c
- makes it easier to use in combination with various 'New' selectors, which mostly return an autoPtr. ENH: add very simple FFT test - basic sanity test that the library links properly
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | www.openfoam.com
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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Copyright (C) 2020 OpenCFD Ltd.
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM, distributed under GPL-3.0-or-later.
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Application
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Test-fft
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Description
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Very simple fft tests
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\*---------------------------------------------------------------------------*/
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#include "argList.H"
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#include "Time.H"
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#include "fft.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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using namespace Foam;
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// Simple forward transform
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tmp<complexField> forward1D(const tmp<complexField>& input)
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{
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const label len = input().size();
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return fft::forwardTransform(input, List<int>({len})) / len;
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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int main(int argc, char *argv[])
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{
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argList::noParallel();
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#include "setRootCase.H"
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// Simple ones - http://www.sccon.ca/sccon/fft/fft3.htm
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{
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complexField input(8, Zero);
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input[0] = 1;
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tmp<complexField> toutput = forward1D(input);
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Info<< nl
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<< "input = " << input << nl
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<< "output = " << toutput << nl;
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}
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{
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complexField input(8, Zero);
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input[1] = 1;
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tmp<complexField> toutput = forward1D(input);
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Info<< nl
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<< "input = " << input << nl
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<< "output = " << toutput << nl;
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}
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Info<< nl << "End\n" << endl;
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return 0;
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}
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// ************************************************************************* //
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