apfel::Operator Class Reference

The Operator class defines the basic object "Operator" which is essentially the convolution on the grid bewteen an Expression object (e.g. a splitting function) and the interpolant functions. More...

#include <operator.h>

Public Member Functions
	Operator ()=delete
	Operator (Operator const &)=default
	Operator (Grid const &gr, Expression const &expr, double const &eps=1e-5, bool const &gpd=false)
	The Operator constructor.
virtual	~Operator ()
	The Operator virtual destructor.
void	BuildOperatorDGLAP ()
	Function that builds a DGLAP-like operator.
void	BuildOperatorGPD ()
	Function that builds a GPD-like operator.
Distribution	Evaluate (double const &x) const
	Function that interpolates the operator over the first index return a Distribution object.
Grid const &	GetGrid () const
	Function that returns the Grid object associated to the operator.
Expression const &	GetExpression () const
	Function that returns the Expression object associated to the operator.
double const &	GetIntegrationAccuracy () const
	Function that returns the integration accuracy.
bool const &	IsGPD () const
	Function that returns the GPD switch.
std::vector< matrix< double > >	GetOperator () const
	Function that returns the operator.
void	Print () const
	Print the Operator object.
Binary operators
Distribution	operator*= (Distribution const &d) const
	this *= Distribution
Operator &	operator*= (Operator const &o)
	this *= Operator
Operator &	operator= (Operator const &o)
	this = Operator
Operator &	operator*= (double const &s)
	this *= Scalar
Operator &	operator*= (std::function< double(double const &)> f)
	This *= Function.
Operator &	operator/= (double const &s)
	this /= Scalar
Operator &	operator+= (Operator const &o)
	this += Operator
Operator &	operator-= (Operator const &o)
	this -= Operator

Protected Attributes
Grid const &	_grid
	Grid on which to compute the operator.
Expression const &	_expr
	Expression to be used.
double const	_eps
	Integration accuracy.
bool const	_gpd
	GPD switch.
std::vector< matrix< double > >	_Operator
	Operator values.

Friends
std::ostream &	operator<< (std::ostream &os, Operator const &sg)
	Method which prints Operator with cout <<. This only prints the Operator on the first subgrid and is supposed to be used for debugging purposes.

Detailed Description

The Operator class defines the basic object "Operator" which is essentially the convolution on the grid bewteen an Expression object (e.g. a splitting function) and the interpolant functions.

Examples

distribution_test.cc, massiveCF_test.cc, operator_test.cc, principal_value_test.cc, and set_test.cc.

Constructor & Destructor Documentation

Operator() [1/3]

apfel::Operator::Operator ( )

delete

Operator() [2/3]

apfel::Operator::Operator ( Operator const & )

default

Operator() [3/3]

apfel::Operator::Operator	(	Grid const &	gr,
		Expression const &	expr,
		double const &	eps = 1e-5,
		bool const &	gpd = false )

The Operator constructor.

Parameters

gr	the Grid object
expr	the expression to be transformed
eps	relative accuracy of the numerical integrations (default: 10-5)
gpd	whether the operator had to computed for a GPD-like expression (default: false)

~Operator()

virtual apfel::Operator::~Operator ( )

inlinevirtual

The Operator virtual destructor.

Member Function Documentation

BuildOperatorDGLAP()

void apfel::Operator::BuildOperatorDGLAP

(

)

Function that builds a DGLAP-like operator.

BuildOperatorGPD()

void apfel::Operator::BuildOperatorGPD

(

)

Function that builds a GPD-like operator.

Evaluate()

Distribution apfel::Operator::Evaluate

(

double const &

x

)

const

Function that interpolates the operator over the first index return a Distribution object.

Parameters

x	the value in x to be interpolated

GetExpression()

Expression const & apfel::Operator::GetExpression ( ) const

inline

Function that returns the Expression object associated to the operator.

GetGrid()

Grid const & apfel::Operator::GetGrid ( ) const

inline

Function that returns the Grid object associated to the operator.

GetIntegrationAccuracy()

double const & apfel::Operator::GetIntegrationAccuracy ( ) const

inline

Function that returns the integration accuracy.

GetOperator()

std::vector< matrix< double > > apfel::Operator::GetOperator ( ) const

inline

Function that returns the operator.

IsGPD()

bool const & apfel::Operator::IsGPD ( ) const

inline

Function that returns the GPD switch.

operator*=() [1/4]

Distribution apfel::Operator::operator*=

(

Distribution const &

d

)

const

this *= Distribution

operator*=() [2/4]

Operator & apfel::Operator::operator*=

(

double const &

s

)

this *= Scalar

operator*=() [3/4]

Operator & apfel::Operator::operator*=

(

Operator const &

o

)

this *= Operator

operator*=() [4/4]

Operator & apfel::Operator::operator*=

(

std::function< double(double const &)>

f

)

This *= Function.

operator+=()

Operator & apfel::Operator::operator+=

(

Operator const &

o

)

this += Operator

operator-=()

Operator & apfel::Operator::operator-=

(

Operator const &

o

)

this -= Operator

operator/=()

Operator & apfel::Operator::operator/=

(

double const &

s

)

this /= Scalar

operator=()

Operator & apfel::Operator::operator=

(

Operator const &

o

)

this = Operator

Print()

void apfel::Operator::Print ( ) const

inline

Print the Operator object.

Friends And Related Symbol Documentation

operator<<

std::ostream & operator<< ( std::ostream & os, Operator const & sg )

friend

Method which prints Operator with cout <<. This only prints the Operator on the first subgrid and is supposed to be used for debugging purposes.

Member Data Documentation

_eps

double const apfel::Operator::_eps

protected

Integration accuracy.

_expr

Expression const& apfel::Operator::_expr

protected

Expression to be used.

_gpd

bool const apfel::Operator::_gpd

protected

GPD switch.

_grid

Grid const& apfel::Operator::_grid

protected

Grid on which to compute the operator.

_Operator

std::vector<matrix<double> > apfel::Operator::_Operator

protected

Operator values.

---

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

• /Users/vb262523/Codes/apfelxx/inc/apfel/operator.h