0023024: Update headers of OCCT files
[occt.git] / src / AppParCurves / AppParCurves_Gradient_BFGS.gxx
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b311480e 1// Created on: 1999-12-16
2// Created by: Atelier CAS2000
3// Copyright (c) 1999 Matra Datavision
4// Copyright (c) 1999-2012 OPEN CASCADE SAS
5//
6// The content of this file is subject to the Open CASCADE Technology Public
7// License Version 6.5 (the "License"). You may not use the content of this file
8// except in compliance with the License. Please obtain a copy of the License
9// at http://www.opencascade.org and read it completely before using this file.
10//
11// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
12// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
13//
14// The Original Code and all software distributed under the License is
15// distributed on an "AS IS" basis, without warranty of any kind, and the
16// Initial Developer hereby disclaims all such warranties, including without
17// limitation, any warranties of merchantability, fitness for a particular
18// purpose or non-infringement. Please see the License for the specific terms
19// and conditions governing the rights and limitations under the License.
20
7fd59977 21
22
23// Redefinition de math_BFGS:
24// ==========================
25
26
27AppParCurves_Gradient_BFGS::AppParCurves_Gradient_BFGS(math_MultipleVarFunctionWithGradient& F,
28 const math_Vector& StartingPoint,
29 const Standard_Real Tolerance3d,
30 const Standard_Real Tolerance2d,
31 const Standard_Real Eps,
32 const Standard_Integer NbIterations ):
33 math_BFGS(F, Eps, NbIterations, Eps),
34 myTol3d(Tolerance3d),
35 myTol2d(Tolerance2d)
36{
37 Perform(F, StartingPoint);
38}
39
40Standard_Boolean AppParCurves_Gradient_BFGS::IsSolutionReached(math_MultipleVarFunctionWithGradient& F) const
41{
42 AppParCurves_ParFunction *F1 = (AppParCurves_ParFunction*) &F;
43 Standard_Boolean Result, Result2;
44
45 Result = (2.0 * fabs(TheMinimum - PreviousMinimum) <=
46 1.e-10 * (fabs(TheMinimum) + fabs(PreviousMinimum))+1.e-12);
47 Standard_Real MErr3d = F1->MaxError3d();
48 Standard_Real MErr2d = F1->MaxError2d();
49
50 Result2 = ((MErr3d <= myTol3d) && (MErr2d <= myTol2d));
51 return (Result || Result2);
52 }
53
54