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_ArcTangent_HeaderFile
18 #define _Expr_ArcTangent_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_Type.hxx>
23 #include <Expr_UnaryExpression.hxx>
24 #include <Standard_Boolean.hxx>
25 #include <Standard_Real.hxx>
26 #include <Expr_Array1OfNamedUnknown.hxx>
27 #include <TColStd_Array1OfReal.hxx>
28 class Standard_NumericError;
29 class Expr_NotEvaluable;
30 class Expr_GeneralExpression;
31 class Expr_NamedUnknown;
32 class TCollection_AsciiString;
35 class Expr_ArcTangent;
36 DEFINE_STANDARD_HANDLE(Expr_ArcTangent, Expr_UnaryExpression)
39 class Expr_ArcTangent : public Expr_UnaryExpression
45 //! Creates the Arctan of <exp>.
46 Standard_EXPORT Expr_ArcTangent(const Handle(Expr_GeneralExpression)& exp);
48 //! Returns a GeneralExpression after a simplification
49 //! of the arguments of <me>.
50 Standard_EXPORT Handle(Expr_GeneralExpression) ShallowSimplified() const Standard_OVERRIDE;
52 //! Returns a copy of <me> having the same unknowns and functions.
53 Standard_EXPORT Handle(Expr_GeneralExpression) Copy() const Standard_OVERRIDE;
55 //! Tests if <me> and <Other> define the same expression.
56 //! This method does not include any simplification before
58 Standard_EXPORT Standard_Boolean IsIdentical (const Handle(Expr_GeneralExpression)& Other) const Standard_OVERRIDE;
60 Standard_EXPORT Standard_Boolean IsLinear() const Standard_OVERRIDE;
62 //! Returns the derivative on <X> unknown of <me>.
63 Standard_EXPORT Handle(Expr_GeneralExpression) Derivative (const Handle(Expr_NamedUnknown)& X) const Standard_OVERRIDE;
65 //! Returns the value of <me> (as a Real) by
66 //! replacement of <vars> by <vals>.
67 //! Raises NotEvaluable if <me> contains NamedUnknown not
68 //! in <vars> or NumericError if result cannot be computed.
69 Standard_EXPORT Standard_Real Evaluate (const Expr_Array1OfNamedUnknown& vars, const TColStd_Array1OfReal& vals) const Standard_OVERRIDE;
71 //! returns a string representing <me> in a readable way.
72 Standard_EXPORT TCollection_AsciiString String() const Standard_OVERRIDE;
77 DEFINE_STANDARD_RTTIEXT(Expr_ArcTangent,Expr_UnaryExpression)
97 #endif // _Expr_ArcTangent_HeaderFile