VectorOps.hpp

/*

  Copyright 2024 Equinor ASA.

  This file is part of the Open Porous Media project (OPM).

  OPM 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.

  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef OPM_VECTOROPS_HPP
#define OPM_VECTOROPS_HPP
namespace Opm{

template<typename T>
void cross(const std::array<T,3>& x, const std::array<T,3>& y,
           std::array<T,3>& z)
{
    z[0] = x[1]*y[2] - x[2]*y[1];
    z[1] = x[2]*y[0] - x[0]*y[2];
    z[2] = x[0]*y[1] - x[1]*y[0];
}
} // end namespace Opm
#endif