/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2007-2019 PCOpt/NTUA
    Copyright (C) 2013-2019 FOSS GP
    Copyright (C) 2019 OpenCFD Ltd.
-------------------------------------------------------------------------------
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.

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

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

inline Foam::scalar Foam::Function1Types::reverseRamp::value
(
    const scalar t
) const
{
    // Reverse linear ramp
    //return min(max(scalar(1) - (t - start_)/duration_, scalar(0)), scalar(1));

    // Reverse step ramp
    return min
    (
        max
        (
            -(floor((t - start_)/interval_))/steps_
            *(scalar(1) - minValue_) + scalar(1), 
            minValue_
        ),
        scalar(1)
    );
}

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