/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011-2015 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/>.

\*---------------------------------------------------------------------------*/

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

inline Foam::label Foam::pairPotentialList::pairPotentialIndex
(
    const label a,
    const label b
) const
{
    label index;

    if (a < b)
    {
        index = a*(2*nIds_ - a - 1)/2 + b;
    }

    else
    {
        index = b*(2*nIds_ - b - 1)/2 + a;
    }

    if (index > size() - 1)
    {
        FatalErrorInFunction
            << "Attempting to access a pairPotential with too high an index."
            << nl << "a = " << a << ", b = " << b << ", index = " << index
            << nl << "max index = " << size() - 1
            << nl << abort(FatalError);
    }

    return index;
}


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

inline Foam::scalar Foam::pairPotentialList::rCutMax() const
{
    return rCutMax_;
}


inline Foam::scalar Foam::pairPotentialList::rCutMaxSqr() const
{
    return rCutMaxSqr_;
}


inline const Foam::pairPotential& Foam::pairPotentialList::electrostatic() const
{
    return electrostaticPotential_;
}


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