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d5f74e42d6
License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast Wrong license statements corrected in several files. Copyright and license statements added in XSD and GLSL files. Copyright year updated in some files. Obsolete documentation files removed from DrawResources.
90 lines
2.8 KiB
C++
90 lines
2.8 KiB
C++
// Created on: 1991-05-28
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// Created by: Arnaud BOUZY
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// Copyright (c) 1991-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <Expr_Tanh.ixx>
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#include <Expr_NumericValue.hxx>
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#include <Expr_ArgTanh.hxx>
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#include <Expr_Cosh.hxx>
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#include <Expr_Square.hxx>
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#include <Expr_Division.hxx>
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#include <Expr_Operators.hxx>
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#include <Expr.hxx>
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Expr_Tanh::Expr_Tanh(const Handle(Expr_GeneralExpression)& exp)
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{
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CreateOperand(exp);
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}
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Handle(Expr_GeneralExpression) Expr_Tanh::ShallowSimplified () const
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{
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Handle(Expr_GeneralExpression) myexp = Operand();
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if (myexp->IsKind(STANDARD_TYPE(Expr_NumericValue))) {
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Handle(Expr_NumericValue) myNVexp = Handle(Expr_NumericValue)::DownCast(myexp);
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return new Expr_NumericValue(Tanh(myNVexp->GetValue()));
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}
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if (myexp->IsKind(STANDARD_TYPE(Expr_ArgTanh))) {
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return myexp->SubExpression(1);
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}
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Handle(Expr_Tanh) me = this;
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return me;
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}
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Handle(Expr_GeneralExpression) Expr_Tanh::Copy () const
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{
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return new Expr_Tanh(Expr::CopyShare(Operand()));
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}
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Standard_Boolean Expr_Tanh::IsIdentical (const Handle(Expr_GeneralExpression)& Other) const
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{
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if (Other->IsKind(STANDARD_TYPE(Expr_Tanh))) {
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Handle(Expr_GeneralExpression) myexp = Operand();
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return myexp->IsIdentical(Other->SubExpression(1));
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}
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return Standard_False;
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}
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Standard_Boolean Expr_Tanh::IsLinear () const
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{
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return !ContainsUnknowns();
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}
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Handle(Expr_GeneralExpression) Expr_Tanh::Derivative (const Handle(Expr_NamedUnknown)& X) const
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{
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if (!Contains(X)) {
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return new Expr_NumericValue(0.0);
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}
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Handle(Expr_GeneralExpression) myexp = Operand();
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Handle(Expr_GeneralExpression) myder = myexp->Derivative(X);
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Handle(Expr_Cosh) firstder = new Expr_Cosh(Expr::CopyShare(myexp));
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Handle(Expr_Square) sq = new Expr_Square(firstder->ShallowSimplified());
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Handle(Expr_Division) resu = myder / sq->ShallowSimplified();
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return resu->ShallowSimplified();
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}
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Standard_Real Expr_Tanh::Evaluate(const Expr_Array1OfNamedUnknown& vars, const TColStd_Array1OfReal& vals) const
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{
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Standard_Real val = Operand()->Evaluate(vars,vals);
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return (::Exp(val)-::Exp(-val))/(::Exp(val)+::Exp(-val));
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}
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TCollection_AsciiString Expr_Tanh::String() const
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{
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TCollection_AsciiString str("Tanh(");
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str += Operand()->String();
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str += ")";
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return str;
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}
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