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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2020-2026 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
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::Constant
Description
Templated function of two variables that returns a constant value.
Usage
For entry \<name\> returning the value <value>:
\verbatim
<name> constant <value>;
\endverbatim
or simply
\verbatim
<name> <value>;
\endverbatim
SourceFiles
Constant.C
\*---------------------------------------------------------------------------*/
#ifndef Constant2_H
#define Constant2_H
#include "Function2.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace Function2s
{
/*---------------------------------------------------------------------------*\
Class Constant Declaration
\*---------------------------------------------------------------------------*/
template<class Type>
class Constant
:
public FieldFunction2<Type, Constant<Type>>
{
// Private Data
//- Constant value
const Type value_;
public:
// Runtime type information
TypeName("constant");
// Constructors
//- Construct from name and value
Constant(const word& name, const Type& val);
//- Construct from name and dictionary
Constant
(
const word& name,
const unitSets& units,
const dictionary& dict
);
//- Construct from name and Istream
// Reads the constant value without the Function2 type
// for backward compatibility
Constant(const word& name, const unitSets& units, Istream& is);
//- Copy constructor
Constant(const Constant<Type>& cnst);
//- Construct and return a clone
virtual tmp<Function2<Type>> clone() const
{
return tmp<Function2<Type>>(new Constant<Type>(*this));
}
//- Destructor
virtual ~Constant();
// Member Functions
//- Return constant
virtual inline Type value(const scalar x, const scalar y) const;
//- Return constant field
virtual inline tmp<Field<Type>> value
(
const scalarField& x,
const scalarField& y
) const;
//- Write in dictionary format
virtual void write(Ostream& os, const unitSets& units) const;
// Member Operators
//- Disallow default bitwise assignment
void operator=(const Constant<Type>&) = delete;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Function2s
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#include "Constant2I.H"
#ifdef NoRepository
#include "Constant2.C"
#include "Function2New.C"
#endif
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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