ForwardEulerHost2Deriv.hpp

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// -------------------------------------------------------//
//
// SHAMROCK code for hydrodynamics
// Copyright (c) 2021-2026 Timothée David--Cléris <tim.shamrock@proton.me>
// SPDX-License-Identifier: CeCILL Free Software License Agreement v2.1
// Shamrock is licensed under the CeCILL 2.1 License, see LICENSE for more information
//
// -------------------------------------------------------//
 
#pragma once

 
#include "shambase/stacktrace.hpp"
#include "shamsolvergraph/edge/IDataEdge.hpp"
#include "shamsolvergraph/node/INode.hpp"
#include <vector>
 
#define NODE_EDGES(X_RO, X_RW)                                                                     \
    X_RO(shamrock::solvergraph::IDataEdge<Tscal>, dt)                                              \
    X_RO(shamrock::solvergraph::IDataEdge<std::vector<T>>, field_dt1)                              \
    X_RO(shamrock::solvergraph::IDataEdge<std::vector<T>>, field_dt2)                              \
    X_RW(shamrock::solvergraph::IDataEdge<std::vector<T>>, field)
 
namespace shamrock::solvergraph {

    template<class T, class Tscal = T>
    class ForwardEulerHost2Deriv : public INode {
 
        public:
        ForwardEulerHost2Deriv() = default;
 
        EXPAND_NODE_EDGES(NODE_EDGES)
 
        inline void _impl_evaluate_internal() {
            __shamrock_stack_entry();
 
            auto edges = get_edges();
 
            Tscal dt                        = edges.dt.data;
            std::vector<T> &field           = edges.field.data;
            const std::vector<T> &field_dt1 = edges.field_dt1.data;
            const std::vector<T> &field_dt2 = edges.field_dt2.data;
 
            for (size_t i = 0; i < field.size(); i++) {
                field[i] += dt * (field_dt1[i] + field_dt2[i]);
            }
        }
 
        inline virtual std::string _impl_get_label() const { return "ForwardEulerHost2Deriv"; }
 
        inline virtual std::string _impl_get_tex() const { return "TODO"; }
    };
 
} // namespace shamrock::solvergraph
 
#undef NODE_EDGES