Constant.C

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  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
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#include "Constant.H"

// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

template<class Type>
Foam::Function1Types::Constant<Type>::Constant
(
    const word& entryName,
    const Type& val
)
:
    Function1<Type>(entryName),
    value_(val)
{}


template<class Type>
Foam::Function1Types::Constant<Type>::Constant
(
    const word& entryName,
    const dictionary& dict
)
:
    Function1<Type>(entryName),
    value_(Zero)
{
    Istream& is(dict.lookup(entryName));
    word entryType(is);
    is  >> value_;
}


template<class Type>
Foam::Function1Types::Constant<Type>::Constant
(
    const word& entryName,
    Istream& is
)
:
    Function1<Type>(entryName),
    value_(pTraits<Type>(is))
{}


template<class Type>
Foam::Function1Types::Constant<Type>::Constant(const Constant<Type>& cnst)
:
    Function1<Type>(cnst),
    value_(cnst.value_)
{}


// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //

template<class Type>
Foam::Function1Types::Constant<Type>::~Constant()
{}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

template<class Type>
Type Foam::Function1Types::Constant<Type>::value(const scalar x) const
{
    return value_;
}


template<class Type>
Type Foam::Function1Types::Constant<Type>::integrate
(
    const scalar x1,
    const scalar x2
) const
{
    return (x2 - x1)*value_;
}


template<class Type>
void Foam::Function1Types::Constant<Type>::writeData(Ostream& os) const
{
    Function1<Type>::writeData(os);

    os  << token::SPACE << value_ << token::END_STATEMENT << nl;
}


// ************************************************************************* //