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6928e35131
Destructors of collection classes from NCollection and math_Function are made virtual to allow safe destruction by pointer to base class. Destructors of classes HatchGen_IntersectionPoint, IntCurveSurface_Intersection, Intf_Interference, IntRes2d_Intersection are made protected to avoid possibility of destructing by pointer to corresponding base class.
64 lines
2.3 KiB
C++
64 lines
2.3 KiB
C++
// Created on: 1991-05-06
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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_Function_HeaderFile
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#define _math_Function_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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//! This abstract class describes the virtual functions
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//! associated with a Function of a single variable.
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class math_Function
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Virtual destructor, for safe inheritance
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virtual ~math_Function () {}
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//! Computes the value of the function <F> for a given value of
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//! variable <X>.
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//! returns True if the computation was done successfully,
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//! False otherwise.
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Standard_EXPORT virtual Standard_Boolean Value (const Standard_Real X, Standard_Real& F) = 0;
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//! returns the state of the function corresponding to the
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//! latest call of any methods associated with the function.
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//! This function is called by each of the algorithms
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//! described later which defined the function Integer
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//! Algorithm::StateNumber(). The algorithm has the
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//! responsibility to call this function when it has found
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//! a solution (i.e. a root or a minimum) and has to maintain
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//! the association between the solution found and this
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//! StateNumber.
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//! Byu default, this method returns 0 (which means for the
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//! algorithm: no state has been saved). It is the
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//! responsibility of the programmer to decide if he needs
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//! to save the current state of the function and to return
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//! an Integer that allows retrieval of the state.
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Standard_EXPORT virtual Standard_Integer GetStateNumber();
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};
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#endif // _math_Function_HeaderFile
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