Abstract base class for evaluating constraints. Users derive from this class and implement the eval() method. More...

#include <Base_Constrainer.h>

Inheritance diagram for hitfit::Constraint_Calculator:

Public Member Functions
	Constraint_Calculator (int nconstraints)

virtual bool	eval (const Column_Vector &x, const Column_Vector &y, Row_Vector &F, Matrix &Bx, Matrix &By)=0
	Evaluate constraints at the point described by x and y (well-measured and poorly-measured variables, respectively). The results should be stored in F. Bx and By should be set to the gradients of F with respect to x and y, respectively. More...

int	nconstraints () const

virtual	~Constraint_Calculator ()

Private Attributes
int	_nconstraints

Detailed Description

Abstract base class for evaluating constraints. Users derive from this class and implement the eval() method.

Definition at line 139 of file Base_Constrainer.h.

Constructor & Destructor Documentation

hitfit::Constraint_Calculator::Constraint_Calculator ( int nconstraints )

Constructor.

Parameters

nconstraints Number of constraint equations.

Definition at line 147 of file Base_Constrainer.cc.

   : _nconstraints (nconstraints)
 {
 }

virtual hitfit::Constraint_Calculator::~Constraint_Calculator ( )

inlinevirtual

Destructor.

Definition at line 157 of file Base_Constrainer.h.

References F(), and x().

157 {}

Member Function Documentation

virtual bool hitfit::Constraint_Calculator::eval	(	const Column_Vector &	x,
		const Column_Vector &	y,
		Row_Vector &	F,
		Matrix &	Bx,
		Matrix &	By
	)

pure virtual

Evaluate constraints at the point described by x and y (well-measured and poorly-measured variables, respectively). The results should be stored in F. Bx and By should be set to the gradients of F with respect to x and y, respectively.

Parameters

x	Column_Vector of well-measured variables.
y	Column_Vector of poorly-measured variables.
F	Row_Vector contains the results of the constraint evaluation.
Bx	Gradients of F with respect to x
By	Gradients of F with respect to y

Output:

F.
Bx.
By.

Return:: true if the point (x,y) is accepted.
false if the point (x,y) is rejected (i.e., in an unphysical region). The constraints need not be evaluated in that case.

Implemented in hitfit::Fourvec_Constraint_Calculator.

int hitfit::Constraint_Calculator::nconstraints ( ) const

Return the number of constraints.

Definition at line 159 of file Base_Constrainer.cc.

References _nconstraints.

Referenced by hitfit::Chisq_Constrainer::fit().