liboce-foundation-dev 0.17.1-1 / usr / include / oce / math_KronrodSingleIntegration.hxx

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// This file is generated by WOK (CPPExt).
// Please do not edit this file; modify original file instead.
// The copyright and license terms as defined for the original file apply to 
// this header file considered to be the "object code" form of the original source.

#ifndef _math_KronrodSingleIntegration_HeaderFile
#define _math_KronrodSingleIntegration_HeaderFile

#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Macro.hxx>

#include <Standard_Boolean.hxx>
#include <Standard_Real.hxx>
#include <Standard_Integer.hxx>
#include <math_Vector.hxx>
class StdFail_NotDone;
class math_Function;


//! This class implements the Gauss-Kronrod method of
//! integral computation.
class math_KronrodSingleIntegration 
{
public:

  DEFINE_STANDARD_ALLOC

  
  //! An empty constructor.
  Standard_EXPORT math_KronrodSingleIntegration();
  
  //! Constructor. Takes the function, the lower and upper bound
  //! values, the initial number of Kronrod points
  Standard_EXPORT math_KronrodSingleIntegration(math_Function& theFunction, const Standard_Real theLower, const Standard_Real theUpper, const Standard_Integer theNbPnts);
  
  //! Constructor. Takes the function, the lower and upper bound
  //! values, the initial number of Kronrod points, the
  //! tolerance value and the maximal number of iterations as
  //! parameters.
  Standard_EXPORT math_KronrodSingleIntegration(math_Function& theFunction, const Standard_Real theLower, const Standard_Real theUpper, const Standard_Integer theNbPnts, const Standard_Real theTolerance, const Standard_Integer theMaxNbIter);
  
  //! Computation of the integral. Takes the function,
  //! the lower and upper bound values, the initial number
  //! of Kronrod points, the relative tolerance value and the
  //! maximal number of iterations as parameters.
  //! theNbPnts should be odd and greater then or equal to 3.
  Standard_EXPORT   void Perform (math_Function& theFunction, const Standard_Real theLower, const Standard_Real theUpper, const Standard_Integer theNbPnts) ;
  
  //! Computation of the integral. Takes the function,
  //! the lower and upper bound values, the initial number
  //! of Kronrod points, the relative tolerance value and the
  //! maximal number of iterations as parameters.
  //! theNbPnts should be odd and greater then or equal to 3.
  //! Note that theTolerance is relative, i.e. the criterion of
  //! solution reaching is:
  //! Abs(Kronrod - Gauss)/Abs(Kronrod) < theTolerance.
  //! theTolerance should be positive.
  Standard_EXPORT   void Perform (math_Function& theFunction, const Standard_Real theLower, const Standard_Real theUpper, const Standard_Integer theNbPnts, const Standard_Real theTolerance, const Standard_Integer theMaxNbIter) ;
  
  //! Returns Standard_True if computation is performed
  //! successfully.
      Standard_Boolean IsDone()  const;
  
  //! Returns the value of the integral.
      Standard_Real Value()  const;
  
  //! Returns the value of the relative error reached.
      Standard_Real ErrorReached()  const;
  
  //! Returns the value of the relative error reached.
      Standard_Real AbsolutError()  const;
  
  //! Returns the number of Kronrod points
  //! for which the result is computed.
      Standard_Integer OrderReached()  const;
  
  //! Returns the number of iterations
  //! that were made to compute result.
      Standard_Integer NbIterReached()  const;
  
  Standard_EXPORT static   Standard_Boolean GKRule (math_Function& theFunction, const Standard_Real theLower, const Standard_Real theUpper, const math_Vector& theGaussP, const math_Vector& theGaussW, const math_Vector& theKronrodP, const math_Vector& theKronrodW, Standard_Real& theValue, Standard_Real& theError) ;




protected:





private:



  Standard_Boolean myIsDone;
  Standard_Real myValue;
  Standard_Real myErrorReached;
  Standard_Real myAbsolutError;
  Standard_Integer myNbPntsReached;
  Standard_Integer myNbIterReached;


};


#include <math_KronrodSingleIntegration.lxx>





#endif // _math_KronrodSingleIntegration_HeaderFile

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