1 // Created on: 1991-01-14
2 // Created by: Arnaud BOUZY
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 _Expr_Sum_HeaderFile
18 #define _Expr_Sum_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_Type.hxx>
23 #include <Expr_PolyExpression.hxx>
24 #include <Expr_SequenceOfGeneralExpression.hxx>
25 #include <Standard_Boolean.hxx>
26 #include <Standard_Integer.hxx>
27 #include <Standard_Real.hxx>
28 #include <Expr_Array1OfNamedUnknown.hxx>
29 #include <TColStd_Array1OfReal.hxx>
30 class Standard_OutOfRange;
31 class Standard_NumericError;
32 class Expr_NotEvaluable;
33 class Expr_GeneralExpression;
34 class Expr_NamedUnknown;
35 class TCollection_AsciiString;
39 DEFINE_STANDARD_HANDLE(Expr_Sum, Expr_PolyExpression)
42 class Expr_Sum : public Expr_PolyExpression
48 //! Creates the sum of all the members of sequence <exps>.
49 Standard_EXPORT Expr_Sum(const Expr_SequenceOfGeneralExpression& exps);
51 //! Creates the sum of <exp1> and <exp2>.
52 Standard_EXPORT Expr_Sum(const Handle(Expr_GeneralExpression)& exp1, const Handle(Expr_GeneralExpression)& exp2);
54 //! Returns a GeneralExpression after a simplification
55 //! of the arguments of <me>.
56 Standard_EXPORT Handle(Expr_GeneralExpression) ShallowSimplified() const Standard_OVERRIDE;
58 //! Returns a copy of <me> having the same unknowns and functions.
59 Standard_EXPORT Handle(Expr_GeneralExpression) Copy() const Standard_OVERRIDE;
61 //! Tests if <me> and <Other> define the same expression.
62 //! This method does not include any simplification before
64 Standard_EXPORT Standard_Boolean IsIdentical (const Handle(Expr_GeneralExpression)& Other) const Standard_OVERRIDE;
66 Standard_EXPORT Standard_Boolean IsLinear() const Standard_OVERRIDE;
68 //! Returns the derivative on <X> unknown of <me>.
69 Standard_EXPORT Handle(Expr_GeneralExpression) Derivative (const Handle(Expr_NamedUnknown)& X) const Standard_OVERRIDE;
71 //! Returns the <N>-th derivative on <X> unknown of <me>.
72 //! Raises OutOfRange if <N> <= 0
73 Standard_EXPORT virtual Handle(Expr_GeneralExpression) NDerivative (const Handle(Expr_NamedUnknown)& X, const Standard_Integer N) const Standard_OVERRIDE;
75 //! Returns the value of <me> (as a Real) by
76 //! replacement of <vars> by <vals>.
77 //! Raises NotEvaluable if <me> contains NamedUnknown not
78 //! in <vars> or NumericError if result cannot be computed.
79 Standard_EXPORT Standard_Real Evaluate (const Expr_Array1OfNamedUnknown& vars, const TColStd_Array1OfReal& vals) const Standard_OVERRIDE;
81 //! returns a string representing <me> in a readable way.
82 Standard_EXPORT TCollection_AsciiString String() const Standard_OVERRIDE;
87 DEFINE_STANDARD_RTTIEXT(Expr_Sum,Expr_PolyExpression)
107 #endif // _Expr_Sum_HeaderFile