Eigen::SparseQR_QProduct< SparseQRType, Derived > Struct Template Reference

Inheritance diagram for Eigen::SparseQR_QProduct< SparseQRType, Derived >:

Public Types
typedef SparseQRType::QRMatrixType	MatrixType
typedef SparseQRType::Scalar	Scalar
Public Types inherited from Eigen::ReturnByValue< SparseQR_QProduct< SparseQRType, Derived > >
typedef internal::dense_xpr_base< ReturnByValue >::type	Base
typedef internal::traits< SparseQR_QProduct< SparseQRType, Derived > >::ReturnType	ReturnType

Public Member Functions
Index	cols () const
template<typename DesType >
void	evalTo (DesType &res) const
Index	rows () const
	SparseQR_QProduct (const SparseQRType &qr, const Derived &other, bool transpose)
Public Member Functions inherited from Eigen::ReturnByValue< SparseQR_QProduct< SparseQRType, Derived > >
EIGEN_CONSTEXPR Index	cols () const EIGEN_NOEXCEPT
void	evalTo (Dest &dst) const
EIGEN_CONSTEXPR Index	rows () const EIGEN_NOEXCEPT

Public Attributes
const Derived &	m_other
const SparseQRType &	m_qr
bool	m_transpose

Detailed Description

template<typename SparseQRType, typename Derived>
struct Eigen::SparseQR_QProduct< SparseQRType, Derived >

Definition at line 615 of file SparseQR.h.

Member Typedef Documentation

MatrixType

template<typename SparseQRType , typename Derived >

typedef SparseQRType::QRMatrixType Eigen::SparseQR_QProduct< SparseQRType, Derived >::MatrixType

Definition at line 617 of file SparseQR.h.

Scalar

template<typename SparseQRType , typename Derived >

typedef SparseQRType::Scalar Eigen::SparseQR_QProduct< SparseQRType, Derived >::Scalar

Definition at line 618 of file SparseQR.h.

Constructor & Destructor Documentation

SparseQR_QProduct()

template<typename SparseQRType , typename Derived >

Eigen::SparseQR_QProduct< SparseQRType, Derived >::SparseQR_QProduct ( const SparseQRType &  qr, const Derived &  other, bool  transpose  )

inline

Definition at line 620 of file SparseQR.h.

                                                                                  : 
  m_qr(qr),m_other(other),m_transpose(transpose) {}

Member Function Documentation

cols()

template<typename SparseQRType , typename Derived >

Index Eigen::SparseQR_QProduct< SparseQRType, Derived >::cols ( void  ) const

inline

Definition at line 623 of file SparseQR.h.

{ return m_other.cols(); }

evalTo()

template<typename SparseQRType , typename Derived >

template<typename DesType >

void Eigen::SparseQR_QProduct< SparseQRType, Derived >::evalTo ( DesType &  res ) const

inline

Definition at line 627 of file SparseQR.h.

  {
    Index m = m_qr.rows();
    Index n = m_qr.cols();
    Index diagSize = (std::min)(m,n);
    res = m_other;
    if (m_transpose)
    {
      eigen_assert(m_qr.m_Q.rows() == m_other.rows() && "Non conforming object sizes");
      //Compute res = Q' * other column by column
      for(Index j = 0; j < res.cols(); j++){
        for (Index k = 0; k < diagSize; k++)
        {
          Scalar tau = Scalar(0);
          tau = m_qr.m_Q.col(k).dot(res.col(j));
          if(tau==Scalar(0)) continue;
          tau = tau * m_qr.m_hcoeffs(k);
          res.col(j) -= tau * m_qr.m_Q.col(k);
        }
      }
    }
    else
    {
      eigen_assert(m_qr.matrixQ().cols() == m_other.rows() && "Non conforming object sizes");
 
      res.conservativeResize(rows(), cols());
 
      // Compute res = Q * other column by column
      for(Index j = 0; j < res.cols(); j++)
      {
        Index start_k = internal::is_identity<Derived>::value ? numext::mini(j,diagSize-1) : diagSize-1;
        for (Index k = start_k; k >=0; k--)
        {
          Scalar tau = Scalar(0);
          tau = m_qr.m_Q.col(k).dot(res.col(j));
          if(tau==Scalar(0)) continue;
          tau = tau * numext::conj(m_qr.m_hcoeffs(k));
          res.col(j) -= tau * m_qr.m_Q.col(k);
        }
      }
    }
  }

rows()

template<typename SparseQRType , typename Derived >

Index Eigen::SparseQR_QProduct< SparseQRType, Derived >::rows ( void  ) const

inline

Definition at line 622 of file SparseQR.h.

{ return m_qr.matrixQ().rows(); }

Member Data Documentation

m_other

template<typename SparseQRType , typename Derived >

const Derived& Eigen::SparseQR_QProduct< SparseQRType, Derived >::m_other

Definition at line 671 of file SparseQR.h.

m_qr

template<typename SparseQRType , typename Derived >

const SparseQRType& Eigen::SparseQR_QProduct< SparseQRType, Derived >::m_qr

Definition at line 670 of file SparseQR.h.

m_transpose

template<typename SparseQRType , typename Derived >

bool Eigen::SparseQR_QProduct< SparseQRType, Derived >::m_transpose

Definition at line 672 of file SparseQR.h.

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The documentation for this struct was generated from the following file:

• SparseQR.h