c_csr_matrix.h

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/*
 *  SPDX-FileCopyrightText: Copyright 2021, Siavash Ameli <sameli@berkeley.edu>
 *  SPDX-License-Identifier: BSD-3-Clause
 *  SPDX-FileType: SOURCE
 *
 *  This program is free software: you can redistribute it and/or modify it
 *  under the terms of the license found in the LICENSE.txt file in the root
 *  directory of this source tree.
 */
 
 
#ifndef _C_LINEAR_OPERATOR_C_CSR_MATRIX_H_
#define _C_LINEAR_OPERATOR_C_CSR_MATRIX_H_
 
 
// =======
// Headers
// =======
 
#include "../_definitions/types.h"  // FlagType, LongIndexType
#include "./c_matrix.h"  // cMatrix
 
 
// ============
// c CSR Matrix
// ============
 
template <typename DataType>
class cCSRMatrix : public cMatrix<DataType>
{
    public:
 
        // Member methods
        cCSRMatrix();
 
        cCSRMatrix(
                const DataType* A_data_,
                const LongIndexType* A_indices_,
                const LongIndexType* A_index_pointer_,
                const LongIndexType num_rows_,
                const LongIndexType num_columns_);
 
        virtual ~cCSRMatrix();
 
        virtual FlagType is_identity_matrix() const;
 
        LongIndexType get_nnz() const;
 
        virtual void dot(
                const DataType* vector,
                DataType* product);
 
        virtual void dot_plus(
                const DataType* vector,
                const DataType alpha,
                DataType* product);
 
        virtual void transpose_dot(
                const DataType* vector,
                DataType* product);
 
        virtual void transpose_dot_plus(
                const DataType* vector,
                const DataType alpha,
                DataType* product);
 
    protected:
 
        // Member data
        const DataType* A_data;
        const LongIndexType* A_indices;
        const LongIndexType* A_index_pointer;
};
 
#endif  // _C_LINEAR_OPERATOR_C_CSR_MATRIX_H_