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

#include <SparseQR.h>

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::traits< SparseQR_QProduct< SparseQRType, Derived > >::ReturnType	ReturnType
typedef internal::dense_xpr_base< ReturnByValue >::type	Base

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 Member Functions inherited from Eigen::ReturnByValue< SparseQR_QProduct< SparseQRType, Derived > >
EIGEN_DEVICE_FUNC void	evalTo (Dest &dst) const
EIGEN_DEVICE_FUNC EIGEN_CONSTEXPR Index	rows () const EIGEN_NOEXCEPT
EIGEN_DEVICE_FUNC EIGEN_CONSTEXPR Index	cols () const EIGEN_NOEXCEPT
const Unusable &	coeff (Index) const
const Unusable &	coeff (Index, Index) const
Unusable &	coeffRef (Index)
Unusable &	coeffRef (Index, Index)

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

Member Typedef Documentation

MatrixType

template<typename SparseQRType , typename Derived >

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

Scalar

template<typename SparseQRType , typename Derived >

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

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

      : 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 ( ) const

inline

{ return m_other.cols(); }

References Eigen::SparseQR_QProduct< SparseQRType, Derived >::m_other.

Referenced by gdb.printers._MatrixEntryIterator::__next__(), gdb.printers.EigenMatrixPrinter::children(), gdb.printers.EigenSparseMatrixPrinter::children(), Eigen::SparseQR_QProduct< SparseQRType, Derived >::evalTo(), gdb.printers.EigenMatrixPrinter::to_string(), and gdb.printers.EigenSparseMatrixPrinter::to_string().

evalTo()

template<typename SparseQRType , typename Derived >

template<typename DesType >

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

inline

                                  {
    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);
        }
      }
    }
  }

References Eigen::SparseQR_QProduct< SparseQRType, Derived >::cols(), conj(), eigen_assert, j, k, m, Eigen::SparseQR_QProduct< SparseQRType, Derived >::m_other, Eigen::SparseQR_QProduct< SparseQRType, Derived >::m_qr, Eigen::SparseQR_QProduct< SparseQRType, Derived >::m_transpose, min, Eigen::numext::mini(), n, res, and Eigen::SparseQR_QProduct< SparseQRType, Derived >::rows().

rows()

template<typename SparseQRType , typename Derived >

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

inline

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

References Eigen::SparseQR_QProduct< SparseQRType, Derived >::m_qr.

Referenced by gdb.printers._MatrixEntryIterator::__next__(), gdb.printers.EigenMatrixPrinter::children(), gdb.printers.EigenSparseMatrixPrinter::children(), Eigen::SparseQR_QProduct< SparseQRType, Derived >::evalTo(), gdb.printers.EigenMatrixPrinter::to_string(), and gdb.printers.EigenSparseMatrixPrinter::to_string().

Member Data Documentation

m_other

template<typename SparseQRType , typename Derived >

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

Referenced by Eigen::SparseQR_QProduct< SparseQRType, Derived >::cols(), and Eigen::SparseQR_QProduct< SparseQRType, Derived >::evalTo().

m_qr

template<typename SparseQRType , typename Derived >

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

Referenced by Eigen::SparseQR_QProduct< SparseQRType, Derived >::evalTo(), and Eigen::SparseQR_QProduct< SparseQRType, Derived >::rows().

m_transpose

template<typename SparseQRType , typename Derived >

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

Referenced by Eigen::SparseQR_QProduct< SparseQRType, Derived >::evalTo().

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

• SparseQR.h