1 // Created on: 1991-05-13
2 // Created by: Laurent PAINNOT
3 // Copyright (c) 1991-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _math_MultipleVarFunctionWithGradient_HeaderFile
18 #define _math_MultipleVarFunctionWithGradient_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <math_MultipleVarFunction.hxx>
25 #include <Standard_Integer.hxx>
26 #include <Standard_Boolean.hxx>
27 #include <math_Vector.hxx>
28 #include <Standard_Real.hxx>
32 //! The abstract class MultipleVarFunctionWithGradient
33 //! describes the virtual functions associated with a multiple variable function.
34 class math_MultipleVarFunctionWithGradient : public math_MultipleVarFunction
41 //! Returns the number of variables of the function.
42 Standard_EXPORT virtual Standard_Integer NbVariables() const = 0;
44 //! Computes the values of the Functions <F> for the variable <X>.
45 //! Returns True if the computation was done successfully,
47 Standard_EXPORT virtual Standard_Boolean Value (const math_Vector& X, Standard_Real& F) = 0;
49 //! Computes the gradient <G> of the functions for the variable <X>.
50 //! Returns True if the computation was done successfully,
52 Standard_EXPORT virtual Standard_Boolean Gradient (const math_Vector& X, math_Vector& G) = 0;
54 //! computes the value <F> and the gradient <G> of the
55 //! functions for the variable <X>.
56 //! Returns True if the computation was done successfully,
58 Standard_EXPORT virtual Standard_Boolean Values (const math_Vector& X, Standard_Real& F, math_Vector& G) = 0;
83 #endif // _math_MultipleVarFunctionWithGradient_HeaderFile