1 // File: AppParCurves_Gradient_BFGS.gxx
2 // Created: Thu Dec 16 13:09:24 1999
3 // Author: Atelier CAS2000
4 // <cas@cageox.paris1.matra-dtv.fr>
5 //-Copyright: Matra Datavision 1999
8 // Redefinition de math_BFGS:
9 // ==========================
12 AppParCurves_Gradient_BFGS::AppParCurves_Gradient_BFGS(math_MultipleVarFunctionWithGradient& F,
13 const math_Vector& StartingPoint,
14 const Standard_Real Tolerance3d,
15 const Standard_Real Tolerance2d,
16 const Standard_Real Eps,
17 const Standard_Integer NbIterations ):
18 math_BFGS(F, Eps, NbIterations, Eps),
22 Perform(F, StartingPoint);
25 Standard_Boolean AppParCurves_Gradient_BFGS::IsSolutionReached(math_MultipleVarFunctionWithGradient& F) const
27 AppParCurves_ParFunction *F1 = (AppParCurves_ParFunction*) &F;
28 Standard_Boolean Result, Result2;
30 Result = (2.0 * fabs(TheMinimum - PreviousMinimum) <=
31 1.e-10 * (fabs(TheMinimum) + fabs(PreviousMinimum))+1.e-12);
32 Standard_Real MErr3d = F1->MaxError3d();
33 Standard_Real MErr2d = F1->MaxError2d();
35 Result2 = ((MErr3d <= myTol3d) && (MErr2d <= myTol2d));
36 return (Result || Result2);