LHAPDF5 library interface. Concrete implementation of the PDFModelI interface. More...

#include <LHAPDF5.h>

Inheritance diagram for genie::LHAPDF5:

Public Member Functions
	LHAPDF5 ()

	LHAPDF5 (string config)

virtual	~LHAPDF5 ()

double	UpValence (double x, double Q2) const

double	DownValence (double x, double Q2) const

double	UpSea (double x, double Q2) const

double	DownSea (double x, double Q2) const

double	Strange (double x, double Q2) const

double	Charm (double x, double Q2) const

double	Bottom (double x, double Q2) const

double	Top (double x, double Q2) const

double	Gluon (double x, double Q2) const

PDF_t	AllPDFs (double x, double Q2) const

void	Configure (const Registry &config)

void	Configure (string config)

Public Member Functions inherited from genie::PDFModelI
virtual	~PDFModelI ()

Public Member Functions inherited from genie::Algorithm
virtual	~Algorithm ()

virtual void	FindConfig (void)

virtual const Registry &	GetConfig (void) const

Registry *	GetOwnedConfig (void)

virtual const AlgId &	Id (void) const
	Get algorithm ID. More...

virtual AlgStatus_t	GetStatus (void) const
	Get algorithm status. More...

virtual bool	AllowReconfig (void) const

virtual AlgCmp_t	Compare (const Algorithm *alg) const
	Compare with input algorithm. More...

virtual void	SetId (const AlgId &id)
	Set algorithm ID. More...

virtual void	SetId (string name, string config)

const Algorithm *	SubAlg (const RgKey &registry_key) const

void	AdoptConfig (void)

void	AdoptSubstructure (void)

virtual void	Print (ostream &stream) const
	Print algorithm info. More...

Private Member Functions
void	Initialize (void) const

void	SetPDFSetFromConfig (void) const

Additional Inherited Members
Static Public Member Functions inherited from genie::Algorithm
static string	BuildParamVectKey (const std::string &comm_name, unsigned int i)

static string	BuildParamVectSizeKey (const std::string &comm_name)

Protected Member Functions inherited from genie::PDFModelI
	PDFModelI ()

	PDFModelI (string name)

	PDFModelI (string name, string config)

Protected Member Functions inherited from genie::Algorithm
	Algorithm ()

	Algorithm (string name)

	Algorithm (string name, string config)

void	Initialize (void)

void	DeleteConfig (void)

void	DeleteSubstructure (void)

Registry *	ExtractLocalConfig (const Registry &in) const

Registry *	ExtractLowerConfig (const Registry &in, const string &alg_key) const
	Split an incoming configuration Registry into a block valid for the sub-algo identified by alg_key. More...

template<class T >
bool	GetParam (const RgKey &name, T &p, bool is_top_call=true) const

template<class T >
bool	GetParamDef (const RgKey &name, T &p, const T &def) const

template<class T >
int	GetParamVect (const std::string &comm_name, std::vector< T > &v, bool is_top_call=true) const
	Handle to load vectors of parameters. More...

int	GetParamVectKeys (const std::string &comm_name, std::vector< RgKey > &k, bool is_top_call=true) const

int	AddTopRegistry (Registry *rp, bool owns=true)
	add registry with top priority, also update ownership More...

int	AddLowRegistry (Registry *rp, bool owns=true)
	add registry with lowest priority, also update ownership More...

int	MergeTopRegistry (const Registry &r)

int	AddTopRegisties (const vector< Registry * > &rs, bool owns=false)
	Add registries with top priority, also udated Ownerships. More...

Protected Attributes inherited from genie::Algorithm
bool	fAllowReconfig

bool	fOwnsSubstruc
	true if it owns its substructure (sub-algs,...) More...

AlgId	fID
	algorithm name and configuration set More...

vector< Registry * >	fConfVect

vector< bool >	fOwnerships
	ownership for every registry in fConfVect More...

AlgStatus_t	fStatus
	algorithm execution status More...

AlgMap *	fOwnedSubAlgMp
	local pool for owned sub-algs (taken out of the factory pool) More...

Detailed Description

LHAPDF5 library interface. Concrete implementation of the PDFModelI interface.

Author: Costas Andreopoulos <constantinos.andreopoulos cern.ch> University of Liverpool & STFC Rutherford Appleton Laboratory

June 06, 2004

Definition at line 28 of file LHAPDF5.h.

Constructor & Destructor Documentation

LHAPDF5::LHAPDF5 ( )

Definition at line 27 of file LHAPDF5.cxx.

                  :
 PDFModelI("genie::LHAPDF5")
 {
   this->Initialize();
 }

LHAPDF5::LHAPDF5 ( string config )

Definition at line 33 of file LHAPDF5.cxx.

                               :
 PDFModelI("genie::LHAPDF5", config)
 {
   LOG("LHAPDF5", pDEBUG) << "LHAPDF5 configuration:\n " << this->GetConfig();
 
   this->Initialize();
 }

LHAPDF5::~LHAPDF5 ( )

virtual

Definition at line 41 of file LHAPDF5.cxx.

 {
 
 }

Member Function Documentation

PDF_t LHAPDF5::AllPDFs	(	double	x,
		double	Q2
	)		const

virtual

Implements genie::PDFModelI.

Definition at line 136 of file LHAPDF5.cxx.

 {
   PDF_t pdf;
 
 #ifdef __GENIE_LHAPDF5_ENABLED__
   // QCD scale
   double Q = TMath::Sqrt( TMath::Abs(Q2) );
 
   vector<double> pdfs = LHAPDF::xfx(x, Q);
   pdf.uval = pdfs[8] - pdfs[4];
   pdf.dval = pdfs[7] - pdfs[5];
   pdf.usea = pdfs[4];
   pdf.dsea = pdfs[5];
   pdf.str  = pdfs[9];
   pdf.chm  = pdfs[10];
   pdf.bot  = pdfs[11];
   pdf.top  = pdfs[12];
   pdf.gl   = pdfs[6];;
 #endif
 
   return pdf;
 }

double LHAPDF5::Bottom	(	double	x,
		double	Q2
	)		const

virtual

Implements genie::PDFModelI.

Definition at line 121 of file LHAPDF5.cxx.

 {
   return AllPDFs(x,Q2).bot;
 }

double LHAPDF5::Charm	(	double	x,
		double	Q2
	)		const

virtual

Implements genie::PDFModelI.

Definition at line 116 of file LHAPDF5.cxx.

 {
   return AllPDFs(x,Q2).chm;
 }

void LHAPDF5::Configure ( const Registry & config )

virtual

Configure the algorithm with an external registry The registry is merged with the top level registry if it is owned, Otherwise a copy of it is added with the highest priority

Reimplemented from genie::Algorithm.

Definition at line 165 of file LHAPDF5.cxx.

 {
   Algorithm::Configure(config);
 
   this->Initialize();
   this->SetPDFSetFromConfig();
 
   fAllowReconfig=false;
 }

void LHAPDF5::Configure ( string config )

virtual

Configure the algorithm from the AlgoConfigPool based on param_set string given in input An algorithm contains a vector of registries coming from different xml configuration files, which are loaded according a very precise prioriy This methods will load a number registries in order of priority: 1) "Tunable" parameter set from CommonParametes. This is loaded with the highest prioriry and it is designed to be used for tuning procedure Usage not expected from the user. 2) For every string defined in "CommonParame" the corresponding parameter set will be loaded from CommonParameter.xml 3) parameter set specified by the config string and defined in the xml file of the algorithm 4) if config is not "Default" also the Default parameter set from the same xml file will be loaded Effectively this avoids the repetion of a parameter when it is not changed in the requested configuration

Reimplemented from genie::Algorithm.

Definition at line 175 of file LHAPDF5.cxx.

 {
   Algorithm::Configure(config);
 
   this->Initialize();
   this->SetPDFSetFromConfig();
 
   fAllowReconfig=false;
 }

double LHAPDF5::DownSea	(	double	x,
		double	Q2
	)		const

virtual

Implements genie::PDFModelI.

Definition at line 106 of file LHAPDF5.cxx.

 {
   return AllPDFs(x,Q2).dsea;
 }

double LHAPDF5::DownValence	(	double	x,
		double	Q2
	)		const

virtual

Implements genie::PDFModelI.

Definition at line 96 of file LHAPDF5.cxx.

 {
   return AllPDFs(x,Q2).dval;
 }

double LHAPDF5::Gluon	(	double	x,
		double	Q2
	)		const

virtual

Implements genie::PDFModelI.

Definition at line 131 of file LHAPDF5.cxx.

 {
   return AllPDFs(x,Q2).gl;
 }

void LHAPDF5::Initialize ( void ) const

private

Definition at line 46 of file LHAPDF5.cxx.

 {
 #ifdef __GENIE_LHAPDF5_ENABLED__
   bool lhapath_ok = true;
   const char * lhapath = gSystem->Getenv("LHAPATH");
   if(!lhapath) lhapath_ok = false;
   else {
       void *dirp = gSystem->OpenDirectory(lhapath);
       if (dirp) gSystem->FreeDirectory(dirp);
       else lhapath_ok = false;
   }
   if(!lhapath_ok) {
    LOG("LHAPDF5", pFATAL)
      << "\n"
      << "** LHAPDF won't be able to read-in the PDF data. \n"
      << "** The LHAPATH env. variable is not properly (or at all) defined. \n"
      << "** Please, set LHAPATH to <lhapdf_top_dir>/PDFsets/ \n"
      << "** See http://projects.hepforge.org/lhapdf/ for more details. \n\n";
    gAbortingInErr = true;
    exit(1);
   }
 #endif
 }

void LHAPDF5::SetPDFSetFromConfig ( void ) const

private

Definition at line 70 of file LHAPDF5.cxx.

 {
 // Get PDF spec (particle type, pdf group/set) from configuration registry.
 // For definitions, have a look at PDFLIB and LHAPDF manuals
 
 #ifdef __GENIE_LHAPDF5_ENABLED__
   string name   = "";
   int    type   = 0;
   int    memset = 0;
 
   this->GetParam("name_lhapdf",   name);
   this->GetParam("type_lhapdf",   type);
   this->GetParam("memset_lhapdf", memset);
 
   LHAPDF::SetType stype = (type==0) ? LHAPDF::LHPDF :  LHAPDF::LHGRID;
 
   LHAPDF::initPDFByName(name, stype, memset);
   LHAPDF::extrapolate(false);
 #endif
 }