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

#include <SparseQR.h>

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

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

List of all members.

Public Types
typedef SparseQRType::QRMatrixType	MatrixType
typedef SparseQRType::Scalar	Scalar
Public Member Functions
	SparseQR_QProduct (const SparseQRType &qr, const Derived &other, bool transpose)
Index	rows () const
Index	cols () const
template<typename DesType >
void	evalTo (DesType &res) const
Public Attributes
const SparseQRType &	m_qr
const Derived &	m_other
bool	m_transpose

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Detailed Description

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

Definition at line 600 of file SparseQR.h.

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Member Typedef Documentation

template<typename SparseQRType, typename Derived>

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

Definition at line 602 of file SparseQR.h.

template<typename SparseQRType, typename Derived>

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

Definition at line 603 of file SparseQR.h.

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Constructor & Destructor Documentation

template<typename SparseQRType, typename Derived>

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

Definition at line 605 of file SparseQR.h.

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

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Member Function Documentation

template<typename SparseQRType, typename Derived>

Index Eigen::SparseQR_QProduct< SparseQRType, Derived >::cols

(

void

)

const [inline]

Reimplemented from Eigen::ReturnByValue< SparseQR_QProduct< SparseQRType, Derived > >.

Definition at line 608 of file SparseQR.h.

{ return m_other.cols(); }

template<typename SparseQRType, typename Derived>

template<typename DesType >

void Eigen::SparseQR_QProduct< SparseQRType, Derived >::evalTo

(

DesType &

res

)

const [inline]

Definition at line 612 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.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 = diagSize-1; 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 * m_qr.m_hcoeffs(k);
          res.col(j) -= tau * m_qr.m_Q.col(k);
        }
      }
    }
  }

template<typename SparseQRType, typename Derived>

Index Eigen::SparseQR_QProduct< SparseQRType, Derived >::rows

(

void

)

const [inline]

Reimplemented from Eigen::ReturnByValue< SparseQR_QProduct< SparseQRType, Derived > >.

Definition at line 607 of file SparseQR.h.

{ return m_transpose ? m_qr.rows() : m_qr.cols(); }

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Member Data Documentation

template<typename SparseQRType, typename Derived>

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

Definition at line 652 of file SparseQR.h.

template<typename SparseQRType, typename Derived>

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

Definition at line 651 of file SparseQR.h.

template<typename SparseQRType, typename Derived>

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

Definition at line 653 of file SparseQR.h.

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

• SparseQR.h