Represent a pair of objects in Pair_Table. More...

#include <Objpair.h>

Public Member Functions
int	for_constraint (std::vector< signed char >::size_type k) const
	Retrieve the value set for a constraint. More...

void	has_constraint (std::vector< signed char >::size_type k, int val)
	Set the value for a constraint to a value. More...

int	i () const
	Return the index of the first object. More...

int	j () const
	Return the index of the second object. More...

	Objpair (int i, int j, int nconstraints)
	Constructor. More...

Private Attributes
std::vector< signed char >	_for_constraint

int	_i

int	_j

Friends
std::ostream &	operator<< (std::ostream &s, const Objpair &o)
	Output stream operator, print the content of this Objpair to an output stream. More...

Detailed Description

Represent a pair of objects in Pair_Table.

An Objpair consists of two object indices in a Fourvec_Event, plua a value for each constraint. This value is defined as:

+1 if these two objects are used on the left-hand side of the constraint.
-1 if these two objects are used on the right-hand side of the constraint. 0 if these two objects are not used by that constraint.

Definition at line 62 of file Objpair.h.

Constructor & Destructor Documentation

hitfit::Objpair::Objpair	(	int	i,
		int	j,
		int	nconstraints
	)

Constructor.

Parameters

i	Index of the first object.
j	Index of the second object.
nconstraints	The number of constraints in the problem.

Definition at line 47 of file Objpair.cc.

   : _i (i),
     _j (j),
     _for_constraint (nconstraints)
 {
 }

Member Function Documentation

int hitfit::Objpair::for_constraint ( std::vector< signed char >::size_type k ) const

Retrieve the value set for a constraint.

Parameters

k	The index of the constraint, index starts from 0.

void hitfit::Objpair::has_constraint	(	std::vector< signed char >::size_type	k,
		int	val
	)

Set the value for a constraint to a value.

Parameters

k	The index of the constraint, index starts from 0.
val	The value to set for this constraint.

Definition at line 63 of file Objpair.cc.

References _for_constraint, assert(), and relval_steps::k.

Referenced by hitfit::Pair_Table::Pair_Table().

 {
   assert (k < _for_constraint.size());
   _for_constraint[k] = static_cast<signed char> (val);
 }

int hitfit::Objpair::i ( ) const

Return the index of the first object.

int hitfit::Objpair::j ( ) const

Return the index of the second object.

Friends And Related Function Documentation

std::ostream& operator<<	(	std::ostream &	s,
		const Objpair &	o
	)

friend

Output stream operator, print the content of this Objpair to an output stream.

Parameters

s	The stream to which to write.
o	The instance of Objpair to be printed.

Definition at line 85 of file Objpair.cc.

 {
   s << o._i << " " << o._j;
   for (unsigned k = 0; k < o._for_constraint.size(); ++k)
     s << " " << static_cast<int> (o._for_constraint[k]);
   return s;
 }