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107 lines
3.4 KiB
C++
Executable File
107 lines
3.4 KiB
C++
Executable File
// Created on: 1991-05-27
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// Created by: Arnaud BOUZY
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// Copyright (c) 1991-1999 Matra Datavision
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// Copyright (c) 1999-2012 OPEN CASCADE SAS
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//
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// The content of this file is subject to the Open CASCADE Technology Public
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// License Version 6.5 (the "License"). You may not use the content of this file
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// except in compliance with the License. Please obtain a copy of the License
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// at http://www.opencascade.org and read it completely before using this file.
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//
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// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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//
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// The Original Code and all software distributed under the License is
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// distributed on an "AS IS" basis, without warranty of any kind, and the
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// Initial Developer hereby disclaims all such warranties, including without
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// limitation, any warranties of merchantability, fitness for a particular
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// purpose or non-infringement. Please see the License for the specific terms
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// and conditions governing the rights and limitations under the License.
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#include <Expr_ArgSinh.ixx>
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#include <Expr_NumericValue.hxx>
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#include <Expr_Sinh.hxx>
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#include <Expr_Division.hxx>
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#include <Expr_Square.hxx>
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#include <Expr_Sum.hxx>
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#include <Expr_SquareRoot.hxx>
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#include <Expr_Operators.hxx>
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#include <Expr.hxx>
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Expr_ArgSinh::Expr_ArgSinh (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_ArgSinh::ShallowSimplified () const
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{
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Handle(Expr_GeneralExpression) op = Operand();
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if (op->IsKind(STANDARD_TYPE(Expr_NumericValue))) {
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Handle(Expr_NumericValue) valop = Handle(Expr_NumericValue)::DownCast(op);
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return new Expr_NumericValue(ASinh(valop->GetValue()));
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}
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if (op->IsKind(STANDARD_TYPE(Expr_Sinh))) {
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return op->SubExpression(1);
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}
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Handle(Expr_ArgSinh) me = this;
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return me;
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}
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Handle(Expr_GeneralExpression) Expr_ArgSinh::Copy () const
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{
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return new Expr_ArgSinh(Expr::CopyShare(Operand()));
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}
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Standard_Boolean Expr_ArgSinh::IsIdentical (const Handle(Expr_GeneralExpression)& Other) const
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{
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if (!Other->IsKind(STANDARD_TYPE(Expr_ArgSinh))) {
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return Standard_False;
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}
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Handle(Expr_GeneralExpression) op = Operand();
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return op->IsIdentical(Other->SubExpression(1));
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}
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Standard_Boolean Expr_ArgSinh::IsLinear () const
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{
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if (ContainsUnknowns()) {
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return Standard_False;
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}
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return Standard_True;
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}
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Handle(Expr_GeneralExpression) Expr_ArgSinh::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) op = Operand();
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Handle(Expr_GeneralExpression) derop = op->Derivative(X);
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Handle(Expr_Square) sq = new Expr_Square(Expr::CopyShare(op));
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// X2 + 1
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Handle(Expr_Sum) thesum = sq->ShallowSimplified() + 1.0;
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// sqrt(X2 + 1)
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Handle(Expr_SquareRoot) theroot = new Expr_SquareRoot(thesum->ShallowSimplified());
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// ArgSinh'(F(X)) = F'(X)/sqrt(F(X)2+1)
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Handle(Expr_Division) thediv = derop / theroot->ShallowSimplified();
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return thediv->ShallowSimplified();
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}
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Standard_Real Expr_ArgSinh::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 ::Log(val + ::Sqrt(::Square(val)+1.0));
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}
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TCollection_AsciiString Expr_ArgSinh::String() const
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{
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TCollection_AsciiString str("ASinh(");
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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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