Method swap

include/Eigen/src/SparseCore/SparseMatrix.h:824–831

Swaps the content of two sparse matrices of the same type. * This is a fast operation that simply swaps the underlying pointers and parameters. */

  /** Swaps the content of two sparse matrices of the same type.
   * This is a fast operation that simply swaps the underlying pointers and parameters. */
  inline void swap(SparseMatrix& other) {
    // EIGEN_DBG_SPARSE(std::cout << "SparseMatrix:: swap\n");
    std::swap(m_outerIndex, other.m_outerIndex);
    std::swap(m_innerSize, other.m_innerSize);
    std::swap(m_outerSize, other.m_outerSize);
    std::swap(m_innerNonZeros, other.m_innerNonZeros);
    m_data.swap(other.m_data);
  }
  /** Free-function swap. */
  friend EIGEN_DEVICE_FUNC void swap(SparseMatrix& a, SparseMatrix& b) { a.swap(b); }