518:    if (Tangent.Crossed(prevTangent).SquareMagnitude() < Precision::SquareConfusion() &&
519:      (!(abs(Tangent.Dot(prevTangent)) - 1 < Precision::Confusion()) || Tangent.Dot(prevTangent) + 1 < Precision::Confusion()))

520:    {
521:      return 0;
522:    }

 
782:    else
783:    {
784:      myIsPerform = Standard_False;
785:    }

   Pipe.Perform(1.e-4, Standard_False,  Cont);
   if (!Pipe.IsDone()) {
     di << "GeomFill_Pipe cannot make a surface\n";
-    return 1;
+    return 0;
   }

842:    myStatus = GeomFill_PipeNotOk;

+    if (myLoc->SetCurve(myAdpPath))
+    {
+      TColGeom_SequenceOfCurve SeqC;

+ inline GeomFill_PipeError GeomFill_Pipe::GetStatus() const
+{
+  return myStatus;

+tuyau t curve c1 c2
\ No newline at end of file

   //! Returns whether approximation was done.
     Standard_Boolean IsDone() const;
+  //! Return status of execution
+    GeomFill_PipeError GetStatus() const;

   Standard_Boolean myPolynomial;
-
-
+  //! Execution status
+  GeomFill_PipeError myStatus;

+      // sequence des sections
...
+      // verification de l'orientation
...
+      // creation de la NSections

- void GeomFill_ConstantBiNormal::SetCurve(const Handle(Adaptor3d_Curve)& C) 
+ Standard_Boolean GeomFill_ConstantBiNormal::SetCurve(const Handle(Adaptor3d_Curve)& C) 
 {
   GeomFill_TrihedronLaw::SetCurve(C);
     if (! C.IsNull()) { 
     frenet->SetCurve(C);
   }
+    return Standard_True;
 }

@@ -40,7 +40,7 @@ class GeomFill_LocationLaw : public Standard_Transient
 public:  

-  Standard_EXPORT virtual void SetCurve (const Handle(Adaptor3d_Curve)& C) = 0;
+  Standard_EXPORT virtual Standard_Boolean SetCurve (const Handle(Adaptor3d_Curve)& C) = 0;

 //==================================================================
 //Function: SetCurve
-//Purpose :
+//Purpose : return Standard_True
 //==================================================================

-  
+  //! @return Standard_True in case if execution end correctly, owerwise return Standard_False
   Standard_EXPORT virtual Standard_Boolean SetCurve (const Handle(Adaptor3d_Curve)& C) = 0;

-//Purpose :
+//Purpose : .

//==================================================================
//Function : SetCurve
//Purpose : 
//==================================================================
 Standard_Boolean GeomFill_ConstantBiNormal::SetCurve(const Handle(Adaptor3d_Curve)& C) 
{
  GeomFill_TrihedronLaw::SetCurve(C);
  if (! C.IsNull()) { 
    frenet->SetCurve(C);
  }
  return Standard_True;
}

  Standard_EXPORT virtual Standard_Boolean SetCurve (const Handle(Adaptor3d_Curve)& C) Standard_OVERRIDE;

  //! @return Standard_True

  return Standard_True;

  // TODO constructors