numeqvector.hh 2.11 KB
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// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
// vi: set et ts=4 sw=4 sts=4:
/*****************************************************************************
 *   See the file COPYING for full copying permissions.                      *
 *                                                                           *
 *   This program 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.                                     *
 *                                                                           *
 *   This program is distributed in the hope that it will be useful,         *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of          *
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 *   GNU General Public License for more details.                            *
 *                                                                           *
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 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.   *
 *****************************************************************************/
/*!
 * \file
 * \ingroup Common
 * \brief A helper to deduce a vector with the same size as numbers of equations
 */
#ifndef DUMUX_COMMON_NUMEQVECTOR_HH
#define DUMUX_COMMON_NUMEQVECTOR_HH

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#include <cstddef>

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namespace Dumux {

template<class PrimaryVariables>
struct NumEqVectorTraits
{
    static constexpr std::size_t numEq = PrimaryVariables::size();
    using type = PrimaryVariables;
};

/*!
 * \ingroup Common
 * \brief A vector with the same size as numbers of equations
 * This is the default implementation and has to be specialized for
 * all custom primary variable vector types
 * \note This is based on the primary variables concept
 */
template<class PrimaryVariables>
using NumEqVector = typename NumEqVectorTraits<PrimaryVariables>::type;

} // namespace Dumux

#endif