text: // Created on: 1991-01-14
  // Created by: Arnaud BOUZY
  // Copyright (c) 1991-1999 Matra Datavision
  // Copyright (c) 1999-2014 OPEN CASCADE SAS
  //
  // This file is part of Open CASCADE Technology software library.
  //
  // This library is free software; you can redistribute it and/or modify it under
  // the terms of the GNU Lesser General Public License version 2.1 as published
  // by the Free Software Foundation, with special exception defined in the file
  // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
  // distribution for complete text of the license and disclaimer of any warranty.
  //
  // Alternatively, this file may be used under the terms of Open CASCADE
  // commercial license or contractual agreement.
  
  #ifndef _Expr_Tanh_HeaderFile
  #define _Expr_Tanh_HeaderFile
  
  #include <Standard.hxx>
  #include <Standard_Type.hxx>
  
  #include <Expr_UnaryExpression.hxx>
  #include <Standard_Boolean.hxx>
  #include <Standard_Real.hxx>
  #include <Expr_Array1OfNamedUnknown.hxx>
  #include <TColStd_Array1OfReal.hxx>
  class Expr_GeneralExpression;
  class Expr_NamedUnknown;
  class TCollection_AsciiString;
  
  
  class Expr_Tanh;
  DEFINE_STANDARD_HANDLE(Expr_Tanh, Expr_UnaryExpression)
  
  
  class Expr_Tanh : public Expr_UnaryExpression
  {
  
  public:
  
    
    //! Creates the hyperbolic tangent of <exp>.
    Standard_EXPORT Expr_Tanh(const Handle(Expr_GeneralExpression)& exp);
    
    //! Returns a GeneralExpression after a simplification
    //! of the arguments of <me>.
    Standard_EXPORT Handle(Expr_GeneralExpression) ShallowSimplified() const Standard_OVERRIDE;
    
    //! Returns a copy of <me> having the same unknowns and functions.
    Standard_EXPORT Handle(Expr_GeneralExpression) Copy() const Standard_OVERRIDE;
    
    //! Tests if <me> and <Other> define the same expression.
    //! This method does not include any simplification before
    //! testing.
    Standard_EXPORT Standard_Boolean IsIdentical (const Handle(Expr_GeneralExpression)& Other) const Standard_OVERRIDE;
    
    Standard_EXPORT Standard_Boolean IsLinear() const Standard_OVERRIDE;
    
    //! Returns the derivative on <X> unknown of <me>
    Standard_EXPORT Handle(Expr_GeneralExpression) Derivative (const Handle(Expr_NamedUnknown)& X) const Standard_OVERRIDE;
    
    //! Returns the value of <me> (as a Real) by
    //! replacement of <vars> by <vals>.
    //! Raises NotEvaluable if <me> contains NamedUnknown not
    //! in <vars> or NumericError if result cannot be computed.
    Standard_EXPORT Standard_Real Evaluate (const Expr_Array1OfNamedUnknown& vars, const TColStd_Array1OfReal& vals) const Standard_OVERRIDE;
    
    //! returns a string representing <me> in a readable way.
    Standard_EXPORT TCollection_AsciiString String() const Standard_OVERRIDE;
  
  
  
  
    DEFINE_STANDARD_RTTIEXT(Expr_Tanh,Expr_UnaryExpression)
  
  protected:
  
  
  
  
  private:
  
  
  
  
  };
  
  
  
  
  
  
  
  #endif // _Expr_Tanh_HeaderFile
  