subtract.C

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#include "subtract.H"
#include "addToRunTimeSelectionTable.H"

// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //

namespace Foam
{
namespace functionObjects
{
    defineTypeNameAndDebug(subtract, 0);
    addToRunTimeSelectionTable(functionObject, subtract, dictionary);
}
}


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

template
<
    class A,
    class B,
    class R = decltype(std::declval<A>() - std::declval<B>())
>
struct minusOpAuto
{
    R operator()(const A& a, const B& b)
    {
        return a - b;
    }
};


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

bool Foam::functionObjects::subtract::calc()
{
    return calcOp<minusOpAuto>();
}


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

Foam::functionObjects::subtract::subtract
(
    const word& name,
    const Time& runTime,
    const dictionary& dict
)
:
    fieldsExpression(name, runTime, dict)
{
    setResultName("subtract");
}


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

Foam::functionObjects::subtract::~subtract()
{}


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