1 // Created on: 1991-05-14
2 // Created by: Laurent PAINNOT
3 // Copyright (c) 1991-1999 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_GaussSingleIntegration_HeaderFile
18 #define _math_GaussSingleIntegration_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <Standard_Real.hxx>
25 #include <Standard_Boolean.hxx>
26 #include <Standard_Integer.hxx>
27 #include <Standard_OStream.hxx>
28 class StdFail_NotDone;
33 //! This class implements the integration of a function of a single variable
34 //! between the parameter bounds Lower and Upper.
35 //! Warning: Order must be inferior or equal to 61.
36 class math_GaussSingleIntegration
43 Standard_EXPORT math_GaussSingleIntegration();
46 //! The Gauss-Legendre integration with N = Order points of integration,
47 //! is done on the function F between the bounds Lower and Upper.
48 Standard_EXPORT math_GaussSingleIntegration(math_Function& F, const Standard_Real Lower, const Standard_Real Upper, const Standard_Integer Order);
51 //! The Gauss-Legendre integration with N = Order points of integration and
52 //! given tolerance = Tol is done on the function F between the bounds
54 Standard_EXPORT math_GaussSingleIntegration(math_Function& F, const Standard_Real Lower, const Standard_Real Upper, const Standard_Integer Order, const Standard_Real Tol);
56 //! returns True if all has been correctly done.
57 Standard_Boolean IsDone() const;
59 //! returns the value of the integral.
60 Standard_Real Value() const;
62 //! Prints information on the current state of the object.
63 Standard_EXPORT void Dump (Standard_OStream& o) const;
77 //! perfoms actual computation
78 Standard_EXPORT void Perform (math_Function& F, const Standard_Real Lower, const Standard_Real Upper, const Standard_Integer Order);
82 Standard_Boolean Done;
88 #include <math_GaussSingleIntegration.lxx>
94 #endif // _math_GaussSingleIntegration_HeaderFile