Implementation of bilinear interpolation. More...

#include <BilinearInterpolator.h>

Inheritance diagram for LHAPDF::BilinearInterpolator:

Public Member Functions
double	_interpolateXQ2 (const KnotArray &subgrid, double x, size_t ix, double q2, size_t iq2, int id) const
	Interpolate a single-point in (x,Q2), given x/Q2 values and subgrid indices.
void	_interpolateXQ2 (const KnotArray &subgrid, double x, size_t ix, double q2, size_t iq2, std::vector< double > &ret) const
Public Member Functions inherited from LHAPDF::Interpolator
virtual	~Interpolator ()
	Destructor to allow inheritance.
std::string	type () const
void	setType (std::string t)
	Set the interpolation type.
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.
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

Detailed Description

Implementation of bilinear interpolation.

Member Function Documentation

◆ _interpolateXQ2() [1/2]

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

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.

Implements LHAPDF::Interpolator.

◆ _interpolateXQ2() [2/2]

void LHAPDF::BilinearInterpolator::_interpolateXQ2	(	const KnotArray &	subgrid,
		double	x,
		size_t	ix,
		double	q2,
		size_t	iq2,
		std::vector< double > &	ret ) const