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This commit is contained in:
Gabriele Cosmo
2016-06-09 12:11:21 +02:00
parent 516dbf1a58
commit d93e1e39a9
5384 changed files with 125662 additions and 82444 deletions
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source/global/HEPNumerics/include/G4SimpleIntegration.hh
+40 -34
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@@ -21,34 +21,34 @@
// ********************************************************************
//
//
// $Id: G4SimpleIntegration.hh,v 1.4 2004/11/12 16:25:33 gcosmo Exp $
// GEANT4 tag $Name: geant4-07-00-cand-03 $
// $Id: G4SimpleIntegration.hh,v 1.5 2005/03/15 19:11:35 gcosmo Exp $
// GEANT4 tag $Name: geant4-07-01 $
//
// Class description:
//
// Class for realisation of simple numerical methodes for integration of functions
// with signature: double f(double). The methods based mainly on algorithms given in
// the book : An introduction to NUMERICAL METHODS IN C++, B.H. Flowers, Claredon
// Press, Oxford, 1995
// Class for realisation of simple numerical methodes for integration of
// functions with signature: double f(double). The methods based mainly on
// algorithms given in the book :
// An introduction to NUMERICAL METHODS IN C++,
// B.H. Flowers, Claredon Press, Oxford, 1995.
//
// --------------------------- Member data: -------------------------------------
// --------------------------- Member data ----------------------------
//
// fFunction - pointer to the function to be integrated
// fTolerance - accuracy of integration in Adaptive Gauss method
// fMaxDepth = 100 - constant maximum iteration depth for
// Adaptive Gauss method
// fFunction - pointer to the function to be integrated
// fTolerance - accuracy of integration in Adaptive Gauss method
// fMaxDepth = 100 - constant maximum iteration depth for
// Adaptive Gauss method
//
// --------------------------- Methods: -----------------------------------------
// --------------------------- Methods --------------------------------
//
// Trapezoidal, MidPoint, Gauss,
// and Simpson(double a,double b,int n) - integrate function pointed
// by fFunction from a to b by n iterations, i.e. with Step (b-a)/n
// according to the correspondent method
// Trapezoidal, MidPoint, Gauss and Simpson(double a,double b,int n)
// - integrate function pointed by fFunction from a to b by n iterations,
// i.e. with Step (b-a)/n according to the correspondent method.
//
// AdaptGausIntegration(double a, double b) - integrate function from a to be with
// accuracy <= fTolerance
// AdaptGausIntegration(double a, double b)
// - integrate function from a to be with accuracy <= fTolerance
// ----------------------------- History: ----------------------------------------
// ----------------------------- History ------------------------------
//
// 26.03.97 V.Grichine ( Vladimir.Grichine@cern.ch )
@@ -61,8 +61,9 @@ typedef G4double (*function)(G4double) ;
class G4SimpleIntegration
{
public:
G4SimpleIntegration( function pFunction ) ;
public:
explicit G4SimpleIntegration( function pFunction ) ;
G4SimpleIntegration( function pFunction,
G4double pTolerance ) ;
@@ -73,40 +74,45 @@ public:
G4double Trapezoidal(G4double xInitial,
G4double xFinal,
G4int iterationNumber ) ;
G4int iterationNumber ) ;
G4double MidPoint(G4double xInitial,
G4double xFinal,
G4int iterationNumber ) ;
G4int iterationNumber ) ;
G4double Gauss(G4double xInitial,
G4double xFinal,
G4int iterationNumber ) ;
G4int iterationNumber ) ;
G4double Simpson(G4double xInitial,
G4double xFinal,
G4int iterationNumber ) ;
G4int iterationNumber ) ;
// Adaptive Gauss integration with accuracy ~ fTolerance
G4double AdaptGaussIntegration( G4double xInitial,
G4double xFinal ) ;
protected:
protected:
G4double Gauss( G4double xInitial,
G4double xFinal ) ;
void AdaptGauss( G4double xInitial,
G4double xFinal,
G4double& sum,
G4int& depth ) ;
G4double& sum,
G4int& depth ) ;
private:
private:
G4SimpleIntegration(const G4SimpleIntegration&);
G4SimpleIntegration& operator=(const G4SimpleIntegration&);
// Private copy constructor and assignment operator.
private:
function fFunction ;
G4double fTolerance ;
static G4int fMaxDepth ;
} ;
G4double fTolerance ;
static G4int fMaxDepth ;
};
#endif