PolynomialEntry.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2011-2017 OpenFOAM Foundation
    Copyright (C) 2021 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Class
    Foam::Function1Types::PolynomialEntry
 
Description
    PolynomialEntry container data entry for scalars. Items are stored in a
    list of Tuple2's. Data is input in the form,
    e.g. for an entry <entryName> that describes y = x^2 + 2x^3
 
    Inline specification:
    \verbatim
        <entryName>  polynomial
        (
            (1  2)
            (2  3)
        );
    \endverbatim
 
    Dictionary format:
    \verbatim
        <entryName>
        {
            type   polynomial;
            coeffs
            (
                (1 2)
                (2 3)
            );
        }
    \endverbatim
 
SourceFiles
    PolynomialEntry.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Function1Types_Polynomial_H
#define Function1Types_Polynomial_H
 
#include "Function1.H"
#include "Tuple2.H"
#include "Function1Fwd.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace Function1Types
{
 
/*---------------------------------------------------------------------------*\
                        Class Polynomial Declaration
\*---------------------------------------------------------------------------*/
 
template<class Type>
class Polynomial
:
    public Function1<Type>
{
    // Private Data
 
        //- Polynomial coefficients - list of prefactor, exponent
        List<Tuple2<Type, Type>> coeffs_;
 
        //- Flag to indicate whether polynomial can be integrated
        bool canIntegrate_;
 
 
    // Private Member Functions
 
        //- Check coefficients and if polynomial can be integrated
        void checkCoefficients();
 
        //- No copy assignment
        void operator=(const Polynomial<Type>&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("polynomial");
 
 
    // Constructors
 
        //- Construct from entry name, dictionary and optional registry
        Polynomial
        (
            const word& entryName,
            const dictionary& dict,
            const objectRegistry* obrPtr = nullptr
        );
 
        //- Construct from components
        Polynomial
        (
            const word& entryName,
            const List<Tuple2<Type, Type>>& coeffs,
            const objectRegistry* obrPtr = nullptr
        );
 
        //- Copy constructor
        explicit Polynomial(const Polynomial& poly);
 
        //- Construct and return a clone
        virtual tmp<Function1<Type>> clone() const
        {
            return tmp<Function1<Type>>(new Polynomial<Type>(*this));
        }
 
 
    //- Destructor
    virtual ~Polynomial() = default;
 
 
    // Member Functions
 
        //- Convert time
        virtual void userTimeToTime(const Time& t);
 
        //- Return Polynomial value
        virtual Type value(const scalar x) const;
 
        //- Integrate between two (scalar) values
        virtual Type integrate(const scalar x1, const scalar x2) const;
 
        //- Write as primitive (inline) format
        virtual void writeData(Ostream& os) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Function1Types
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "PolynomialEntry.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //