LHAPDF::BicubicInterpolator Class Reference

Implementation of bicubic interpolation. More...

#include <BicubicInterpolator.h>

Inheritance diagram for LHAPDF::BicubicInterpolator:

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
	Interpolate a single-point in (x,Q2), given x/Q2 values and subgrid indices, for all 11 standard flavours at once.
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 bicubic interpolation.

This class will interpolate in 2D using a bicubic hermite spline.

Member Function Documentation

_interpolateXQ2() [1/2]

double LHAPDF::BicubicInterpolator::_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::BicubicInterpolator::_interpolateXQ2 ( const KnotArray & grid, double x, size_t ix, double q2, size_t iq2, std::vector< double > & ret ) const

virtual

Interpolate a single-point in (x,Q2), given x/Q2 values and subgrid indices, for all 11 standard flavours at once.

This can be overridden in derived classes for a more CPU-efficient implementation than the default looping over all flavours: often the grid coefficients for the point can be efficiently reused for each flavour.

Reimplemented from LHAPDF::Interpolator.

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

• /builddir/build/BUILD/lhapdf-6.5.6-build/LHAPDF-6.5.6/include/LHAPDF/BicubicInterpolator.h