LHAPDF::Interpolator Class Reference

The general interface for interpolating between grid points. More...

#include <Interpolator.h>

Inheritance diagram for LHAPDF::Interpolator:

Public Member Functions
virtual	~Interpolator ()
	Destructor to allow inheritance.
std::string	type () const
void	setType (std::string t)
	Set the interpolation type.
Binding to a PDF object
void	bind (const GridPDF *pdf)
	Bind to a GridPDF.
void	unbind ()
	Unbind from GridPDF.
bool	hasPDF ()
	Identify whether this Interpolator has an associated PDF.
const GridPDF &	pdf () const
	Get the associated GridPDF.
Interpolation methods
double	interpolateXQ (int id, double x, double q) const
	Interpolate a single-point in (x,Q)
double	interpolateXQ2 (int id, double x, double q2) const
	Interpolate a single-point in (x,Q2)
void	interpolateXQ2 (double x, double q2, std::vector< double > &ret) const

Protected Member Functions
virtual double	_interpolateXQ2 (const KnotArray &grid, double x, size_t ix, double q2, size_t iq2, int id) const =0
	Interpolate a single-point in (x,Q2), given x/Q2 values and subgrid indices. More...
virtual void	_interpolateXQ2 (const KnotArray &grid, double x, size_t ix, double q2, size_t iq2, std::vector< double > &ret) const =0

Private Attributes
const GridPDF *	_pdf
std::string	_type

Detailed Description

The general interface for interpolating between grid points.

Member Function Documentation

_interpolateXQ2()

virtual double LHAPDF::Interpolator::_interpolateXQ2 ( const KnotArray &  grid, double  x, size_t  ix, double  q2, size_t  iq2, int  id  ) const

protectedpure virtual

Interpolate a single-point in (x,Q2), given x/Q2 values and subgrid indices.

The key function to be overridden in derived classes: the subgrid and x/Q2 index lookup (and their caching) are done centrally in the Interpolator base class so do not need to be re-implemented in each flavour of interpolator.

Implemented in LHAPDF::LogBilinearInterpolator, LHAPDF::LogBicubicInterpolator, LHAPDF::BilinearInterpolator, and LHAPDF::BicubicInterpolator.

type()

std::string LHAPDF::Interpolator::type ( ) const

inline

Todo:

Make an all-PID version of interpolateQ and Q2?

The name of this type of interpolator

Todo:

Would name() or scheme() be a better name? "Type" maybe confuses with the language type-system

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

• /builds/hepcedar/lhapdf/include/LHAPDF/Interpolator.h