invertPosDefMatrix.h File Reference

#include "Math/SMatrix.h"
#include "Math/CholeskyDecomp.h"
#include <type_traits>

Go to the source code of this file.

Macros
#define	SMATRIX_USE_CONSTEXPR

Functions
template<typename PDM2 >
void	fastInvertPDM2 (PDM2 &mm)
template<typename T , unsigned int N>
bool	invertPosDefMatrix (ROOT::Math::SMatrix< T, N, N, ROOT::Math::MatRepSym< T, N > > &m)
template<typename T , unsigned int N>
bool	invertPosDefMatrix (ROOT::Math::SMatrix< T, N, N, ROOT::Math::MatRepSym< T, N > > const &mIn, ROOT::Math::SMatrix< T, N, N, ROOT::Math::MatRepSym< T, N > > &mOut)
template<>
bool	invertPosDefMatrix< double, 1 > (ROOT::Math::SMatrix< double, 1, 1, ROOT::Math::MatRepSym< double, 1 > > &m)
template<>
bool	invertPosDefMatrix< double, 2 > (ROOT::Math::SMatrix< double, 2, 2, ROOT::Math::MatRepSym< double, 2 > > &m)
template<>
bool	invertPosDefMatrix< float, 1 > (ROOT::Math::SMatrix< float, 1, 1, ROOT::Math::MatRepSym< float, 1 > > &m)
template<>
bool	invertPosDefMatrix< float, 2 > (ROOT::Math::SMatrix< float, 2, 2, ROOT::Math::MatRepSym< float, 2 > > &m)

Macro Definition Documentation

#define SMATRIX_USE_CONSTEXPR

Definition at line 4 of file invertPosDefMatrix.h.

Function Documentation

template<typename PDM2 >

void fastInvertPDM2

(

PDM2 &

mm

)

Definition at line 22 of file invertPosDefMatrix.h.

References fftjetpileupestimator_calo_uncalib_cfi::c0, alignmentValidation::c1, constexpr, and funct::m.

Referenced by invertPosDefMatrix< double, 2 >(), and invertPosDefMatrix< float, 2 >().

                             {
  auto m = mm.Array();

  constexpr typename std::remove_reference<decltype(m[0])>::type one = 1.;
  auto c0 = one/m[0];
  auto c1 = m[1]*m[1]* c0;
  auto c2 = one/(m[2] - c1);

  auto li21 = c1 * c0 * c2;
  m[0] = li21 + c0;
  m[1] = - m[1]*c0*c2;
  m[2] = c2;
}

template<typename T , unsigned int N>

bool invertPosDefMatrix ( ROOT::Math::SMatrix< T, N, N, ROOT::Math::MatRepSym< T, N > > &  m )

inline

Definition at line 10 of file invertPosDefMatrix.h.

References funct::m.

Referenced by SiTrackerMultiRecHitUpdator::calcParameters(), PerigeeTrajectoryError::calculateWeightMatrix(), KalmanVertexUpdator< N >::chi2Increment(), TrajectoryStateCombiner::combine(), SiTrackerMultiRecHitUpdator::ComputeWeight(), MRHChi2MeasurementEstimator::estimate(), KalmanVertexUpdator< N >::positionUpdate(), KalmanVertexTrackUpdator< N >::trackRefit(), KinematicConstrainedVertexUpdatorT< nTrk, nConstraint >::update(), LocalTrajectoryError::weightMatrix(), and PosteriorWeightsCalculator::weights().

                                                                                   {
  
  ROOT::Math::CholeskyDecomp<T,N> decomp(m);
  if (!decomp) {
    return m.Invert();
  } else 
    decomp.Invert(m);
  return true;

}

template<typename T , unsigned int N>

bool invertPosDefMatrix ( ROOT::Math::SMatrix< T, N, N, ROOT::Math::MatRepSym< T, N > > const &  mIn, ROOT::Math::SMatrix< T, N, N, ROOT::Math::MatRepSym< T, N > > &  mOut  )

inline

Definition at line 62 of file invertPosDefMatrix.h.

                                                                   {
  
  ROOT::Math::CholeskyDecomp<T,N> decomp(mIn);
  if (!decomp) {
    mOut=mIn;
    return mOut.Invert();
  } else 
    decomp.Invert(mOut);
  return true;

}

template<>

bool invertPosDefMatrix< double, 1 > ( ROOT::Math::SMatrix< double, 1, 1, ROOT::Math::MatRepSym< double, 1 > > &  m )

inline

Definition at line 37 of file invertPosDefMatrix.h.

References funct::m.

                                                                                                       {
  m(0,0) = 1./m(0,0); 
  return true;
}

template<>

bool invertPosDefMatrix< double, 2 > ( ROOT::Math::SMatrix< double, 2, 2, ROOT::Math::MatRepSym< double, 2 > > &  m )

inline

Definition at line 49 of file invertPosDefMatrix.h.

References fastInvertPDM2(), and funct::m.

                                                                                                       {
  fastInvertPDM2(m); 
  return true;
}

template<>

bool invertPosDefMatrix< float, 1 > ( ROOT::Math::SMatrix< float, 1, 1, ROOT::Math::MatRepSym< float, 1 > > &  m )

inline

Definition at line 42 of file invertPosDefMatrix.h.

References funct::m.

                                                                                                    {
  m(0,0) = 1.f/m(0,0);
  return true;
}

template<>

bool invertPosDefMatrix< float, 2 > ( ROOT::Math::SMatrix< float, 2, 2, ROOT::Math::MatRepSym< float, 2 > > &  m )

inline

Definition at line 54 of file invertPosDefMatrix.h.

References fastInvertPDM2(), and funct::m.

                                                                                                    {
  fastInvertPDM2(m); 
  return true;
}