SundanceUnaryMinus.hpp

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// 
//                              Sundance
//                 Copyright (2005) Sandia Corporation
// 
// Copyright (year first published) Sandia Corporation.  Under the terms 
// of Contract DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government 
// retains certain rights in this software.
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// This library is free software; you can redistribute it and/or modify
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#ifndef SUNDANCE_UNARYMINUS_H
#define SUNDANCE_UNARYMINUS_H

#include "SundanceDefs.hpp"
#include "SundanceUnaryExpr.hpp"
#include "SundanceUnaryMinusEvaluator.hpp"


namespace Sundance
{
  using namespace Sundance;
  using namespace Teuchos;
  

      /** */
      class UnaryMinus : public UnaryExpr,
                         GenericEvaluatorFactory<UnaryMinus, UnaryMinusEvaluator>
        {
        public:
          /** construct with the argument */
          UnaryMinus(const RCP<ScalarExpr>& arg);

          /** virtual dtor */
          virtual ~UnaryMinus() {;}


          /** */
          virtual std::ostream& toText(std::ostream& os, bool paren) const ;

          /** */
          virtual XMLObject toXML() const ;

          /** */
          virtual bool isLinear() const {return true;}

          /** 
           * Indicate whether the expression is linear 
           * with respect to test functions 
           */
          virtual bool isLinearInTests() const 
            {return evaluatableArg()->isLinearInTests();}
          

          /** Indicate whether the expression is linear in the given 
           * functions */
          virtual bool isLinearForm(const Expr& u) const 
            {
              return evaluatableArg()->isLinearForm(u);
            }

          /** Indicate whether the expression is at most 
           * quadratic in the given functions */
          virtual bool isQuadraticForm(const Expr& u) const
            {
              return evaluatableArg()->isQuadraticForm(u);
            }

          /** */
          virtual Set<MultiSet<int> > internalFindQ_W(int order, 
                                                   const EvalContext& context) const ;

          /** */
          virtual RCP<ExprBase> getRcp() {return rcp(this);}

        };
    }

#endif