DifArray Class Reference

#include <DifArray.h>

Public Member Functions
	DifArray (int n, int npar=0)
	DifArray (const HepVector &v, int npar=0)
	DifArray (const DifArray &a)
	~DifArray ()
DifNumber &	operator[] (int i)
DifNumber &	operator() (int i)
DifNumber	fetch (int i) const
int	nElem () const
DifArray &	operator= (const DifArray &)
HepMatrix	jacobian () const
void	zero (int npar=0)
void	print () const

Detailed Description

Definition at line 36 of file DifArray.h.

Constructor & Destructor Documentation

DifArray() [1/3]

DifArray::DifArray	(	int	n,
		int	npar = 0 )

Definition at line 29 of file DifArray.cxx.

                                :
  _nElem(n),
  _pointer(new DifNumber[n])
{zero(npar);}

DifArray() [2/3]

DifArray::DifArray	(	const HepVector &	v,
		int	npar = 0 )

Definition at line 34 of file DifArray.cxx.

                                              :
  _nElem(a.num_row()),
  _pointer(new DifNumber[nElem()])
{copy(a,npar);}

DifArray() [3/3]

DifArray::DifArray

(

const DifArray &

a

)

Definition at line 40 of file DifArray.cxx.

                                   :
  _nElem(a.nElem()),
  _pointer(new DifNumber[nElem()])
{copy(a);}

~DifArray()

DifArray::~DifArray

(

)

Definition at line 45 of file DifArray.cxx.

{delete[] _pointer;}

Member Function Documentation

fetch()

DifNumber DifArray::fetch

(

int

i

)

const

Definition at line 60 of file DifArray.cxx.

                                   {
  i=i-1;
  assert(i>=0);
  assert(i<nElem());
  return _pointer[i];
}

jacobian()

HepMatrix DifArray::jacobian

(

)

const

Definition at line 72 of file DifArray.cxx.

                                  {
  int npar=_pointer[0].nPar();
  HepMatrix temp(nElem(),npar,0);
  for(int i=1; i<=nElem(); i++){
    for(int j=1; j<=npar; j++) {
      temp(i,j)=_pointer[i-1].derivative(j);
    }
  } //(int i=1; i<=nElem(); i++) 
  return temp;
}

Referenced by BesPointErr::covRTPMatrix(), BesVectorErr::covRTPMatrix(), BesPointErr::covRZPMatrix(), BesVectorErr::covRZPMatrix(), TrkHelixUtils::helixFromMomErr(), and TrkHelixUtils::lineFromMomErr().

nElem()

int DifArray::nElem ( ) const

inline

Definition at line 47 of file DifArray.h.

{return _nElem;} // number of elements

Referenced by fetch(), jacobian(), operator()(), operator[](), print(), and zero().

operator()()

DifNumber & DifArray::operator()

(

int

i

)

Definition at line 53 of file DifArray.cxx.

                                    {
  i=i-1;
  assert(i>=0);
  assert(i<nElem());
  return _pointer[i];
}

operator=()

DifArray & DifArray::operator=

(

const DifArray &

rhs

)

Definition at line 67 of file DifArray.cxx.

                                                {
  copy(rhs);
  return *this;
}

operator[]()

DifNumber & DifArray::operator[]

(

int

i

)

Definition at line 47 of file DifArray.cxx.

                                    {
  assert(i>=0);
  assert(i<nElem());
  return _pointer[i];
}

print()

void DifArray::print

(

)

const

Definition at line 104 of file DifArray.cxx.

                          {
  cout << "nElem=" << nElem() << endl;
  for(int i=1; i<=nElem(); i++){
    //SKIP cout << "element(" << i << ")=" << _pointer[i-1];
  }
 
}

zero()

void DifArray::zero

(

int

npar = 0

)

Definition at line 97 of file DifArray.cxx.

                           {
  for(int i=0; i<nElem(); i++) {
    _pointer[i]=0.0;
    _pointer[i].setNPar(npar);
  }
}

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The documentation for this class was generated from the following files:

• DifArray.h
• DifArray.cxx