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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
112 lines
3.3 KiB
C++
112 lines
3.3 KiB
C++
// Created on: 1991-05-13
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// Created by: Laurent PAINNOT
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// Copyright (c) 1991-1999 Matra Datavision
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// Copyright (c) 1999-2014 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_FunctionRoots_HeaderFile
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#define _math_FunctionRoots_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 <TColStd_SequenceOfReal.hxx>
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#include <TColStd_SequenceOfInteger.hxx>
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#include <Standard_Real.hxx>
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#include <Standard_Integer.hxx>
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#include <Standard_OStream.hxx>
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class Standard_RangeError;
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class StdFail_NotDone;
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class math_FunctionWithDerivative;
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//! This class implements an algorithm which finds all the real roots of
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//! a function with derivative within a given range.
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//! Knowledge of the derivative is required.
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class math_FunctionRoots
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Calculates all the real roots of a function F-K within the range
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//! A..B. whithout conditions on A and B
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//! A solution X is found when
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//! abs(Xi - Xi-1) <= Epsx and abs(F(Xi)-K) <= EpsF.
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//! The function is considered as null between A and B if
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//! abs(F-K) <= EpsNull within this range.
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Standard_EXPORT math_FunctionRoots(math_FunctionWithDerivative& F, const Standard_Real A, const Standard_Real B, const Standard_Integer NbSample, const Standard_Real EpsX = 0.0, const Standard_Real EpsF = 0.0, const Standard_Real EpsNull = 0.0, const Standard_Real K = 0.0);
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//! Returns true if the computations are successful, otherwise returns false.
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Standard_Boolean IsDone() const;
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//! returns true if the function is considered as null between A and B.
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//! Exceptions
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//! StdFail_NotDone if the algorithm fails (and IsDone returns false).
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Standard_Boolean IsAllNull() const;
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//! Returns the number of solutions found.
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//! Exceptions
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//! StdFail_NotDone if the algorithm fails (and IsDone returns false).
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Standard_Integer NbSolutions() const;
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//! Returns the Nth value of the root of function F.
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//! Exceptions
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//! StdFail_NotDone if the algorithm fails (and IsDone returns false).
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Standard_Real Value (const Standard_Integer Nieme) const;
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//! returns the StateNumber of the Nieme root.
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//! Exception RangeError is raised if Nieme is < 1
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//! or Nieme > NbSolutions.
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Standard_Integer StateNumber (const Standard_Integer Nieme) const;
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//! Prints on the stream o information on the current state
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//! of the object.
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Standard_EXPORT void Dump (Standard_OStream& o) const;
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protected:
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private:
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Standard_Boolean Done;
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Standard_Boolean AllNull;
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TColStd_SequenceOfReal Sol;
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TColStd_SequenceOfInteger NbStateSol;
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};
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#include <math_FunctionRoots.lxx>
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#endif // _math_FunctionRoots_HeaderFile
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