1 // Created on: 1999-12-16
2 // Created by: Atelier CAS2000
3 // Copyright (c) 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 // Redefinition de math_BFGS:
18 // ==========================
21 AppParCurves_Gradient_BFGS::AppParCurves_Gradient_BFGS(math_MultipleVarFunctionWithGradient& F,
22 const math_Vector& StartingPoint,
23 const Standard_Real Tolerance3d,
24 const Standard_Real Tolerance2d,
25 const Standard_Real Eps,
26 const Standard_Integer NbIterations ):
27 math_BFGS(F, Eps, NbIterations, Eps),
31 Perform(F, StartingPoint);
34 Standard_Boolean AppParCurves_Gradient_BFGS::IsSolutionReached(math_MultipleVarFunctionWithGradient& F) const
36 AppParCurves_ParFunction *F1 = (AppParCurves_ParFunction*) &F;
37 Standard_Boolean Result, Result2;
39 Result = (2.0 * fabs(TheMinimum - PreviousMinimum) <=
40 1.e-10 * (fabs(TheMinimum) + fabs(PreviousMinimum))+1.e-12);
41 Standard_Real MErr3d = F1->MaxError3d();
42 Standard_Real MErr2d = F1->MaxError2d();
44 Result2 = ((MErr3d <= myTol3d) && (MErr2d <= myTol2d));
45 return (Result || Result2);