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111 lines
2.9 KiB
C++
111 lines
2.9 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 | Copyright (C) 1991-2010 OpenCFD Ltd.
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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
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the Free Software Foundation, either version 3 of the License, or
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(at your 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, see <http://www.gnu.org/licenses/>.
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Class
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Foam::Random
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Description
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Simple random number generator.
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SourceFiles
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Random.C
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\*---------------------------------------------------------------------------*/
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#ifndef Random_H
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#define Random_H
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#include "vector.H"
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#include "tensor.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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/*---------------------------------------------------------------------------*\
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Class Random Declaration
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\*---------------------------------------------------------------------------*/
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class Random
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{
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// Private data
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label Seed;
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public:
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// Constructors
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//- Construct given seed
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Random(const label);
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// Member functions
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int bit();
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//- scalar [0..1] (so including 0,1)
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scalar scalar01();
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//- vector with every component scalar01
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vector vector01();
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//- sphericalTensor with every component scalar01
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sphericalTensor sphericalTensor01();
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//- symmTensor with every component scalar01
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symmTensor symmTensor01();
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//- tensor with every component scalar01
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tensor tensor01();
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//- label [lower..upper]
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label integer(const label lower, const label upper);
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vector position(const vector&, const vector&);
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void randomise(scalar&);
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void randomise(vector&);
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void randomise(sphericalTensor&);
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void randomise(symmTensor&);
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void randomise(tensor&);
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//- Return a normal Gaussian randon number
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// with zero mean and unity variance N(0, 1)
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scalar GaussNormal();
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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