1 // Created on: 1991-01-10
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_NumericValue_HeaderFile
18 #define _Expr_NumericValue_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_Type.hxx>
23 #include <Standard_Real.hxx>
24 #include <Expr_GeneralExpression.hxx>
25 #include <Standard_Integer.hxx>
26 #include <Standard_Boolean.hxx>
27 #include <Expr_Array1OfNamedUnknown.hxx>
28 #include <TColStd_Array1OfReal.hxx>
29 class Standard_OutOfRange;
30 class Expr_GeneralExpression;
31 class Expr_NamedUnknown;
32 class TCollection_AsciiString;
35 class Expr_NumericValue;
36 DEFINE_STANDARD_HANDLE(Expr_NumericValue, Expr_GeneralExpression)
38 //! This class describes any reel value defined in an
40 class Expr_NumericValue : public Expr_GeneralExpression
46 Standard_EXPORT Expr_NumericValue(const Standard_Real val);
48 Standard_EXPORT Standard_Real GetValue() const;
50 Standard_EXPORT void SetValue (const Standard_Real val);
52 //! Returns the number of sub-expressions contained
54 Standard_EXPORT Standard_Integer NbSubExpressions() const Standard_OVERRIDE;
56 //! Returns the <I>-th sub-expression of <me>
57 //! raises OutOfRange if <I> > NbSubExpressions(me)
58 Standard_EXPORT const Handle(Expr_GeneralExpression)& SubExpression (const Standard_Integer I) const Standard_OVERRIDE;
60 //! Returns a GeneralExpression after replacement of
61 //! NamedUnknowns by an associated expression and after
62 //! values computation.
63 Standard_EXPORT Handle(Expr_GeneralExpression) Simplified() const Standard_OVERRIDE;
65 //! Returns a GeneralExpression after a simplification
66 //! of the arguments of <me>.
67 Standard_EXPORT Handle(Expr_GeneralExpression) ShallowSimplified() const Standard_OVERRIDE;
69 //! Returns a copy of <me> having the same unknowns and functions.
70 Standard_EXPORT Handle(Expr_GeneralExpression) Copy() const Standard_OVERRIDE;
72 //! Tests if <me> contains NamedUnknown.
73 Standard_EXPORT Standard_Boolean ContainsUnknowns() const Standard_OVERRIDE;
75 //! Tests if <exp> is contained in <me>.
76 Standard_EXPORT Standard_Boolean Contains (const Handle(Expr_GeneralExpression)& exp) const Standard_OVERRIDE;
78 //! Tests if <me> and <Other> define the same expression.
79 //! This method does not include any simplification before
81 Standard_EXPORT Standard_Boolean IsIdentical (const Handle(Expr_GeneralExpression)& Other) const Standard_OVERRIDE;
83 Standard_EXPORT Standard_Boolean IsLinear() const Standard_OVERRIDE;
85 //! Returns the derivative on <X> unknown of <me>
86 Standard_EXPORT Handle(Expr_GeneralExpression) Derivative (const Handle(Expr_NamedUnknown)& X) const Standard_OVERRIDE;
88 //! Returns the <N>-th derivative on <X> unknown of <me>.
89 //! Raises OutOfRange if <N> <= 0
90 Standard_EXPORT virtual Handle(Expr_GeneralExpression) NDerivative (const Handle(Expr_NamedUnknown)& X, const Standard_Integer N) const Standard_OVERRIDE;
92 //! Replaces all occurences of <var> with <with> in <me>
93 Standard_EXPORT void Replace (const Handle(Expr_NamedUnknown)& var, const Handle(Expr_GeneralExpression)& with) Standard_OVERRIDE;
95 //! Returns the value of <me> (as a Real) by
96 //! replacement of <vars> by <vals>.
97 Standard_EXPORT Standard_Real Evaluate (const Expr_Array1OfNamedUnknown& vars, const TColStd_Array1OfReal& vals) const Standard_OVERRIDE;
99 //! returns a string representing <me> in a readable way.
100 Standard_EXPORT TCollection_AsciiString String() const Standard_OVERRIDE;
105 DEFINE_STANDARD_RTTIEXT(Expr_NumericValue,Expr_GeneralExpression)
115 Standard_Real myValue;
126 #endif // _Expr_NumericValue_HeaderFile