type_helpers.h

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// Copyright (c) 2021, Aalto University, developed by Erik Schultheis
// All rights reserved.
//
// SPDX-License-Identifier: MIT
 
#ifndef DISMEC_TYPE_HELPERS_H
#define DISMEC_TYPE_HELPERS_H
 
#include <Eigen/Core>
#include <Eigen/SparseCore>
 
namespace dismec::types {
    namespace type_helpers {
        template<class T, template<class U> typename V>
        using outer_const = std::conditional_t<std::is_const_v<T>, const V<std::remove_const_t < T>>, V<T>>;
 
        template<class T>
        using dense_vector_h = Eigen::Matrix<T, Eigen::Dynamic, 1>;
 
        template<class T>
        using sparse_vector_h = Eigen::SparseVector<T>;
 
        template<class T>
        using dense_row_major_h = Eigen::Matrix<T, Eigen::Dynamic, Eigen::Dynamic, Eigen::RowMajor>;
 
        template<class T>
        using dense_col_major_h = Eigen::Matrix<T, Eigen::Dynamic, Eigen::Dynamic, Eigen::ColMajor>;
 
        template<class T>
        using sparse_row_major_h = Eigen::SparseMatrix<T, Eigen::RowMajor>;
 
        template<class T>
        using sparse_col_major_h = Eigen::SparseMatrix<T, Eigen::ColMajor>;
 
        namespace definitions {
            template<class T>
            using DenseVector = outer_const<T, dense_vector_h>;
 
            template<class T>
            using SparseVector = outer_const<T, sparse_vector_h>;
 
            template<class T>
            using DenseRowMajor = outer_const<T, dense_row_major_h>;
 
            template<class T>
            using DenseColMajor = outer_const<T, dense_col_major_h>;
 
            template<class T>
            using SparseRowMajor = outer_const<T, sparse_row_major_h>;
 
            template<class T>
            using SparseColMajor = outer_const<T, sparse_col_major_h>;
        }
    }
 
    using namespace type_helpers::definitions;
}
 
#endif //DISMEC_TYPE_HELPERS_H