G4BestUnit Class Reference

#include <G4UnitsTable.hh>

Public Member Functions
	G4BestUnit (G4double internalValue, const G4String &category)
	G4BestUnit (const G4ThreeVector &internalValue, const G4String &category)
	~G4BestUnit ()
G4double *	GetValue ()
const G4String &	GetCategory () const
size_t	GetIndexOfCategory () const
	operator G4String () const

Friends
std::ostream &	operator<< (std::ostream &, G4BestUnit VU)

Detailed Description

Definition at line 173 of file G4UnitsTable.hh.

Constructor & Destructor Documentation

G4BestUnit::G4BestUnit	(	G4double	internalValue,
		const G4String &	category
	)

Definition at line 484 of file G4UnitsTable.cc.

  : nbOfVals(1)
{
 // find the category
    G4UnitsTable& theUnitsTable = G4UnitDefinition::GetUnitsTable();
    size_t nbCat = theUnitsTable.size();
    size_t i = 0;
    while ((i<nbCat)&&(theUnitsTable[i]->GetName()!=category)) { i++; }
    if (i == nbCat) 
       {
         G4cout << " G4BestUnit: the category " << category 
                << " does not exist !!" << G4endl;
         G4Exception("G4BestUnit::G4BestUnit()", "InvalidCall",
                     FatalException, "Missing unit category !") ;
       }  
  //
    Value[0] = value;
    Value[1] = 0.;
    Value[2] = 0.;
    IndexOfCategory = i;
}

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G4BestUnit::G4BestUnit	(	const G4ThreeVector &	internalValue,
		const G4String &	category
	)

Definition at line 508 of file G4UnitsTable.cc.

  : nbOfVals(3)
{
 // find the category
    G4UnitsTable& theUnitsTable = G4UnitDefinition::GetUnitsTable();
    size_t nbCat = theUnitsTable.size();
    size_t i = 0;
    while ((i<nbCat)&&(theUnitsTable[i]->GetName()!=category)) { i++; }
    if (i == nbCat) 
       {
         G4cerr << " G4BestUnit: the category " << category 
                << " does not exist." << G4endl;
         G4Exception("G4BestUnit::G4BestUnit()", "InvalidCall",
                     FatalException, "Missing unit category !") ;
       }  
  //
    Value[0] = value.x();
    Value[1] = value.y();
    Value[2] = value.z();
    IndexOfCategory = i;
}

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G4BestUnit::~G4BestUnit

(

)

Definition at line 531 of file G4UnitsTable.cc.

{}

Member Function Documentation

const G4String& G4BestUnit::GetCategory ( ) const

inline

size_t G4BestUnit::GetIndexOfCategory ( ) const

inline

G4double* G4BestUnit::GetValue ( )

inline

G4BestUnit::operator G4String

(

)

const

Definition at line 536 of file G4UnitsTable.cc.

{
  std::ostringstream oss;
  oss << *this;
  return oss.str();
}

Friends And Related Function Documentation

std::ostream& operator<< ( std::ostream &  flux, G4BestUnit  VU  )

friend

Definition at line 545 of file G4UnitsTable.cc.

{
  G4UnitsTable& theUnitsTable = G4UnitDefinition::GetUnitsTable();
  G4UnitsContainer& List = theUnitsTable[a.IndexOfCategory]
                           ->GetUnitsList();
  G4int len = theUnitsTable[a.IndexOfCategory]->GetSymbMxLen();
                           
  G4int    ksup(-1), kinf(-1);
  G4double umax(0.), umin(DBL_MAX);
  G4double rsup(DBL_MAX), rinf(0.);

  //for a ThreeVector, choose the best unit for the biggest value 
  G4double value = std::max(std::max(std::fabs(a.Value[0]),
                                     std::fabs(a.Value[1])),
                            std::fabs(a.Value[2]));

  for (size_t k=0; k<List.size(); k++)
     {
       G4double unit = List[k]->GetValue();
       if (!(value!=DBL_MAX))
         {if(unit>umax) {umax=unit; ksup=k;}}
       else if (value<=DBL_MIN)
         {if(unit<umin) {umin=unit; kinf=k;}}
       else
       {
         G4double ratio = value/unit;
         if ((ratio>=1.)&&(ratio<rsup)) {rsup=ratio; ksup=k;}
         if ((ratio< 1.)&&(ratio>rinf)) {rinf=ratio; kinf=k;}
       } 
     }
 
  G4int index=ksup;
  if(index==-1) { index=kinf; }
  if(index==-1) { index=0; }
  
  for (G4int j=0; j<a.nbOfVals; j++) 
     { flux << a.Value[j]/(List[index]->GetValue()) << " "; }

  std::ios::fmtflags oldform = flux.flags();

  flux.setf(std::ios::left,std::ios::adjustfield);
  flux << std::setw(len) << List[index]->GetSymbol();       
  flux.flags(oldform);

  return flux;
}       

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

• geant4.10.03.p01/source/global/management/include/G4UnitsTable.hh
• geant4.10.03.p01/source/global/management/src/G4UnitsTable.cc