71 lines
2 KiB
C
71 lines
2 KiB
C
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/*---------------------------------------------------------------------------*\
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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 | Copyright held by original author
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM; if not, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Application
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findRoot
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Description
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Test root-finding functions
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\*---------------------------------------------------------------------------*/
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#include "fvCFD.H"
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#include "IOmanip.H"
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#include "BisectionRoot.H"
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#include "RiddersRoot.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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class testFunction
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{
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public:
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testFunction()
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{}
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scalar operator()(const scalar& x) const
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{
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return sqr(x) - 1 - Foam::sin(x);
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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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testFunction tf;
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Info<< setprecision(10)
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<< "Bisection root "
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<< BisectionRoot<testFunction>(tf, 1e-5).root(0, 10) << nl
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<< "Ridders root "
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<< RiddersRoot<testFunction>(tf, 1e-5).root(0, 10) << endl;
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Info<< "End\n" << endl;
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return(0);
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}
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// ************************************************************************* //
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