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42cf5bc1ca
Automatic upgrade of OCCT code by command "occt_upgrade . -nocdl": - WOK-generated header files from inc and sources from drv are moved to src - CDL files removed - All packages are converted to nocdlpack
125 lines
4.4 KiB
C++
125 lines
4.4 KiB
C++
// Created on: 2005-12-08
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// Created by: Sergey KHROMOV
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// Copyright (c) 2005-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _math_KronrodSingleIntegration_HeaderFile
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#define _math_KronrodSingleIntegration_HeaderFile
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#include <Standard.hxx>
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#include <Standard_DefineAlloc.hxx>
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#include <Standard_Handle.hxx>
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#include <Standard_Boolean.hxx>
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#include <Standard_Real.hxx>
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#include <Standard_Integer.hxx>
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#include <math_Vector.hxx>
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class StdFail_NotDone;
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class math_Function;
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//! This class implements the Gauss-Kronrod method of
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//! integral computation.
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class math_KronrodSingleIntegration
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! An empty constructor.
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Standard_EXPORT math_KronrodSingleIntegration();
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//! Constructor. Takes the function, the lower and upper bound
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//! values, the initial number of Kronrod points
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Standard_EXPORT math_KronrodSingleIntegration(math_Function& theFunction, const Standard_Real theLower, const Standard_Real theUpper, const Standard_Integer theNbPnts);
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//! Constructor. Takes the function, the lower and upper bound
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//! values, the initial number of Kronrod points, the
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//! tolerance value and the maximal number of iterations as
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//! parameters.
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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);
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//! Computation of the integral. Takes the function,
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//! the lower and upper bound values, the initial number
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//! of Kronrod points, the relative tolerance value and the
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//! maximal number of iterations as parameters.
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//! theNbPnts should be odd and greater then or equal to 3.
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Standard_EXPORT void Perform (math_Function& theFunction, const Standard_Real theLower, const Standard_Real theUpper, const Standard_Integer theNbPnts);
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//! Computation of the integral. Takes the function,
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//! the lower and upper bound values, the initial number
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//! of Kronrod points, the relative tolerance value and the
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//! maximal number of iterations as parameters.
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//! theNbPnts should be odd and greater then or equal to 3.
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//! Note that theTolerance is relative, i.e. the criterion of
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//! solution reaching is:
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//! Abs(Kronrod - Gauss)/Abs(Kronrod) < theTolerance.
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//! theTolerance should be positive.
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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);
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//! Returns Standard_True if computation is performed
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//! successfully.
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Standard_Boolean IsDone() const;
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//! Returns the value of the integral.
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Standard_Real Value() const;
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//! Returns the value of the relative error reached.
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Standard_Real ErrorReached() const;
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//! Returns the value of the relative error reached.
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Standard_Real AbsolutError() const;
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//! Returns the number of Kronrod points
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//! for which the result is computed.
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Standard_Integer OrderReached() const;
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//! Returns the number of iterations
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//! that were made to compute result.
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Standard_Integer NbIterReached() const;
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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);
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protected:
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private:
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Standard_Boolean myIsDone;
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Standard_Real myValue;
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Standard_Real myErrorReached;
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Standard_Real myAbsolutError;
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Standard_Integer myNbPntsReached;
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Standard_Integer myNbIterReached;
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};
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#include <math_KronrodSingleIntegration.lxx>
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#endif // _math_KronrodSingleIntegration_HeaderFile
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