Sum.hh

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///
/// @file  Sum.hh
/// @brief Tensor sum algorithm
///

//**** This file is a part of the HAMMER library
//**** Copyright (C) 2016 - 2020 The HAMMER Collaboration
//**** HAMMER is licensed under version 3 of the GPL; see COPYING for details
//**** Please note the MCnet academic guidelines; see GUIDELINES for details

// -*- C++ -*-
#ifndef HAMMER_MATH_MULTIDIM_OPS_SUM
#define HAMMER_MATH_MULTIDIM_OPS_SUM

namespace Hammer {


    namespace MultiDimensional {

        class IContainer;
        class VectorContainer;
        class SparseContainer;
        class OuterContainer;

        namespace Ops {

            class Sum final {
            public:
                Sum() {}

                IContainer* operator()(VectorContainer& first, const VectorContainer& second);
                IContainer* operator()(SparseContainer& first, const SparseContainer& second);
                IContainer* operator()(VectorContainer& first, const SparseContainer& second);
                IContainer* operator()(SparseContainer& first, const VectorContainer& second);
                IContainer* operator()(OuterContainer& first, const VectorContainer& second);
                IContainer* operator()(OuterContainer& first, const SparseContainer& second);
                IContainer* operator()(OuterContainer& first, const OuterContainer& second);
                IContainer* operator()(SparseContainer& first, const OuterContainer& second);

                IContainer* operator()(IContainer& first, const IContainer& second);

                IContainer* error(IContainer&, const IContainer&);
            };
        }

    } // namespace MultiDimensional

} // namespace Hammer


#endif