ZeroConstant2.H

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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::Function2s::ZeroConstant
 
Description
    Templated function of two variables that returns the corresponding 0 (zero).
 
Usage
    \verbatim
        <name> zero;
    \endverbatim
 
SourceFiles
    ZeroConstant.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef ZeroConstant2_H
#define ZeroConstant2_H
 
#include "Function2.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace Function2s
{
 
/*---------------------------------------------------------------------------*\
                        Class ZeroConstant Declaration
\*---------------------------------------------------------------------------*/
 
template<class Type>
class ZeroConstant
:
    public FieldFunction2<Type, ZeroConstant<Type>>
{
 
public:
 
    // Runtime type information
    TypeName("zero");
 
 
    // Constructors
 
        //- Construct from name and dictionary
        ZeroConstant(const word& name, const dictionary& dict);
 
 
    //- Destructor
    virtual ~ZeroConstant();
 
 
    // Member Functions
 
        //- Return Zero
        virtual inline Type value(const scalar x, const scalar y) const;
 
        //- Return Zero field
        virtual inline tmp<Field<Type>> value
        (
            const scalarField& x,
            const scalarField& y
        ) const;
 
        //- Write in dictionary format
        virtual void write(Ostream& os) const;
 
 
    // Member Operators
 
        //- Disallow default bitwise assignment
        void operator=(const ZeroConstant<Type>&) = delete;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Function2s
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "ZeroConstant2I.H"
 
#ifdef NoRepository
    #include "ZeroConstant2.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //