Method matrixU

dependence/eigen-3.4.0/Eigen/src/SparseLU/SparseLU.h:253–256

\returns an expression of the matrix U, * The only operation available with this expression is the triangular solve * \code * y = b; matrixU().solveInPlace(y); * \endcode */

      * \endcode
      */
    SparseLUMatrixUReturnType<SCMatrix,MappedSparseMatrix<Scalar,ColMajor,StorageIndex> > matrixU() const
    {
      return SparseLUMatrixUReturnType<SCMatrix, MappedSparseMatrix<Scalar,ColMajor,StorageIndex> >(m_Lstore, m_Ustore);
    }

    /**
      * \returns a reference to the row matrix permutation \f$ P_r \f$ such that \f$P_r A P_c^T = L U\f$