Function swap

include/rabitqlib/third/Eigen/src/Core/DenseStorage.h:324–329

    }
    EIGEN_DEVICE_FUNC DenseStorage(Index, Index rows, Index cols) : m_rows(rows), m_cols(cols) {}
    EIGEN_DEVICE_FUNC void swap(DenseStorage& other)
    {
      internal::plain_array_helper::swap(m_data, m_rows * m_cols, other.m_data, other.m_rows * other.m_cols);
      numext::swap(m_rows,other.m_rows);
      numext::swap(m_cols,other.m_cols);
    }
    EIGEN_DEVICE_FUNC Index rows() const {return m_rows;}
    EIGEN_DEVICE_FUNC Index cols() const {return m_cols;}
    EIGEN_DEVICE_FUNC void conservativeResize(Index, Index rows, Index cols) { m_rows = rows; m_cols = cols; }