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9775fa6110
Macro NO_CXX_EXCEPTION was removed from code. Method Raise() was replaced by explicit throw statement. Method Standard_Failure::Caught() was replaced by normal C++mechanism of exception transfer. Method Standard_Failure::Caught() is deprecated now. Eliminated empty constructors. Updated samples. Eliminate empty method ChangeValue from NCollection_Map class. Removed not operable methods from NCollection classes.
110 lines
3.3 KiB
C++
110 lines
3.3 KiB
C++
// Created on: 1991-04-16
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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.hxx>
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#include <Expr_GeneralExpression.hxx>
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#include <Expr_NamedUnknown.hxx>
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#include <Expr_NotEvaluable.hxx>
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#include <Expr_NumericValue.hxx>
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#include <Expr_Operators.hxx>
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#include <Expr_UnaryMinus.hxx>
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#include <Standard_NumericError.hxx>
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#include <Standard_OutOfRange.hxx>
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#include <Standard_Type.hxx>
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#include <TCollection_AsciiString.hxx>
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IMPLEMENT_STANDARD_RTTIEXT(Expr_UnaryMinus,Expr_UnaryExpression)
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Expr_UnaryMinus::Expr_UnaryMinus(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_UnaryMinus::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(-myNVexp->GetValue());
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}
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if (myexp->IsKind(STANDARD_TYPE(Expr_UnaryMinus))) {
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return myexp->SubExpression(1);
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}
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Handle(Expr_UnaryMinus) me = this;
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return me;
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}
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Handle(Expr_GeneralExpression) Expr_UnaryMinus::Copy () const
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{
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return -(Expr::CopyShare(Operand()));
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}
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Standard_Boolean Expr_UnaryMinus::IsIdentical (const Handle(Expr_GeneralExpression)& Other) const
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{
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if (Other->IsKind(STANDARD_TYPE(Expr_UnaryMinus))) {
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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_UnaryMinus::IsLinear () const
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{
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Handle(Expr_GeneralExpression) myexp = Operand();
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return myexp->IsLinear();
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}
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Handle(Expr_GeneralExpression) Expr_UnaryMinus::Derivative (const Handle(Expr_NamedUnknown)& X) const
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{
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Handle(Expr_GeneralExpression) myder = Operand();
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myder = myder->Derivative(X);
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Handle(Expr_UnaryMinus) resu = - myder;
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return resu->ShallowSimplified();
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}
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Handle(Expr_GeneralExpression) Expr_UnaryMinus::NDerivative (const Handle(Expr_NamedUnknown)& X, const Standard_Integer N) const
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{
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if (N <= 0) {
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throw Standard_OutOfRange();
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}
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Handle(Expr_GeneralExpression) myder = Operand();
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myder = myder->NDerivative(X,N);
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Handle(Expr_UnaryMinus) resu = - myder;
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return resu->ShallowSimplified();
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}
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Standard_Real Expr_UnaryMinus::Evaluate(const Expr_Array1OfNamedUnknown& vars, const TColStd_Array1OfReal& vals) const
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{
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return - Operand()->Evaluate(vars,vals);
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}
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TCollection_AsciiString Expr_UnaryMinus::String() const
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{
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TCollection_AsciiString str;
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Handle(Expr_GeneralExpression) op = Operand();
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if (op->NbSubExpressions() > 1) {
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str = "-(";
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str += op->String();
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str += ")";
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}
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else {
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str = "-";
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str += op->String();
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}
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return str;
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}
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