1 // Created on: 1996-02-28
2 // Created by: Philippe MANGIN
3 // Copyright (c) 1996-1999 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_MultipleVarFunctionWithHessian_HeaderFile
18 #define _math_MultipleVarFunctionWithHessian_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <math_MultipleVarFunctionWithGradient.hxx>
25 #include <Standard_Integer.hxx>
26 #include <Standard_Boolean.hxx>
27 #include <math_Vector.hxx>
28 #include <Standard_Real.hxx>
33 class math_MultipleVarFunctionWithHessian : public math_MultipleVarFunctionWithGradient
40 //! returns the number of variables of the function.
41 Standard_EXPORT virtual Standard_Integer NbVariables() const = 0;
43 //! computes the values of the Functions <F> for the
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
51 //! Returns True if the computation was done successfully,
53 Standard_EXPORT virtual Standard_Boolean Gradient (const math_Vector& X, math_Vector& G) = 0;
55 //! computes the value <F> and the gradient <G> of the
56 //! functions for the variable <X>.
57 //! Returns True if the computation was done successfully,
59 Standard_EXPORT virtual Standard_Boolean Values (const math_Vector& X, Standard_Real& F, math_Vector& G) = 0;
61 //! computes the value <F>, the gradient <G> and the
62 //! hessian <H> of the functions for the variable <X>.
63 //! Returns True if the computation was done
64 //! successfully, False otherwise.
65 Standard_EXPORT virtual Standard_Boolean Values (const math_Vector& X, Standard_Real& F, math_Vector& G, math_Matrix& H) = 0;
90 #endif // _math_MultipleVarFunctionWithHessian_HeaderFile