Class Matrix

tests/test_buffers.cpp:52–128

test_from_python / test_to_python:

    // test_from_python / test_to_python:
    class Matrix {
    public:
        Matrix(py::ssize_t rows, py::ssize_t cols) : m_rows(rows), m_cols(cols) {
            print_created(this, std::to_string(m_rows) + "x" + std::to_string(m_cols) + " matrix");
            // NOLINTNEXTLINE(cppcoreguidelines-prefer-member-initializer)
            m_data = new float[(size_t) (rows * cols)];
            memset(m_data, 0, sizeof(float) * (size_t) (rows * cols));
        }

        Matrix(const Matrix &s) : m_rows(s.m_rows), m_cols(s.m_cols) {
            print_copy_created(this,
                               std::to_string(m_rows) + "x" + std::to_string(m_cols) + " matrix");
            // NOLINTNEXTLINE(cppcoreguidelines-prefer-member-initializer)
            m_data = new float[(size_t) (m_rows * m_cols)];
            memcpy(m_data, s.m_data, sizeof(float) * (size_t) (m_rows * m_cols));
        }

        Matrix(Matrix &&s) noexcept : m_rows(s.m_rows), m_cols(s.m_cols), m_data(s.m_data) {
            print_move_created(this);
            s.m_rows = 0;
            s.m_cols = 0;
            s.m_data = nullptr;
        }

        ~Matrix() {
            print_destroyed(this,
                            std::to_string(m_rows) + "x" + std::to_string(m_cols) + " matrix");
            delete[] m_data;
        }

        Matrix &operator=(const Matrix &s) {
            if (this == &s) {
                return *this;
            }
            print_copy_assigned(this,
                                std::to_string(m_rows) + "x" + std::to_string(m_cols) + " matrix");
            delete[] m_data;
            m_rows = s.m_rows;
            m_cols = s.m_cols;
            m_data = new float[(size_t) (m_rows * m_cols)];
            memcpy(m_data, s.m_data, sizeof(float) * (size_t) (m_rows * m_cols));
            return *this;
        }

        Matrix &operator=(Matrix &&s) noexcept {
            print_move_assigned(this,
                                std::to_string(m_rows) + "x" + std::to_string(m_cols) + " matrix");
            if (&s != this) {
                delete[] m_data;
                m_rows = s.m_rows;
                m_cols = s.m_cols;
                m_data = s.m_data;
                s.m_rows = 0;
                s.m_cols = 0;
                s.m_data = nullptr;
            }
            return *this;
        }