RTOpPack_ROpMinIndexGreaterThanBound.hpp

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// ***********************************************************************
// 
// RTOp: Interfaces and Support Software for Vector Reduction Transformation
//       Operations
//                Copyright (2006) Sandia Corporation
// 
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
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// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
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// You should have received a copy of the GNU Lesser General Public
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#ifndef RTOPPACK_ROP_MIN_INDEX_GREATER_THAN_BOUND_HPP
#define RTOPPACK_ROP_MIN_INDEX_GREATER_THAN_BOUND_HPP

#include "RTOpPack_ROpMinIndex.hpp"
#include "Teuchos_StandardMemberCompositionMacros.hpp"


namespace RTOpPack {


template<class Scalar>
class ROpMinIndexGreaterThanBoundEleWiseReductionOp {
public:
  ROpMinIndexGreaterThanBoundEleWiseReductionOp(
    const Scalar &bound = ScalarTraits<Scalar>::zero()
    )
    :bound_(bound)
    {}
  void operator()(const index_type i, const Scalar &v0,
    ScalarIndex<Scalar> &reduct) const
    {
      if(
        v0 >  bound_
        &&
        (
          v0 < reduct.scalar
          ||
          ( v0 == reduct.scalar && i < reduct.index )
          )
        )
      {
        reduct = ScalarIndex<Scalar>(v0, i);
      }
    }
private:
  Scalar bound_;
};


template<class Scalar>
class ROpMinIndexGreaterThanBound
  : public ROp_1_CoordVariantScalarReduction<
      Scalar,
      ScalarIndex<Scalar>,
      ROpMinIndexGreaterThanBoundEleWiseReductionOp<Scalar>,
      ROpMinIndexReductObjReductionOp<Scalar> >
{
public:

  ROpMinIndexGreaterThanBound(
    const Scalar &bound_in = Teuchos::ScalarTraits<Scalar>::zero()
    )
    {
      this->setOpNameBase("ROpMinIndexGreaterThanBound");
      bound(bound_in);
      initReductObjValue(
        ScalarIndex<Scalar>(+ScalarTraits<Scalar>::rmax(), -1));
    }
  void bound(const Scalar& bound_in)
    { 
      this->setEleWiseReduction(
        ROpMinIndexGreaterThanBoundEleWiseReductionOp<Scalar>(bound_in)
        );
    }
  ScalarIndex<Scalar> operator()(const ReductTarget& reduct_obj ) const
    { return this->getRawVal(reduct_obj); }
  
};


} // namespace RTOpPack


#endif // RTOPPACK_ROP_MIN_INDEX_GREATER_THAN_BOUND_HPP