/usr/include/trilinos/RTOpPack_ROpMaxIndexLessThanBound.hpp is in libtrilinos-rtop-dev 12.4.2-2.
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// ***********************************************************************
//
// RTOp: Interfaces and Support Software for Vector Reduction Transformation
// Operations
// Copyright (2006) Sandia Corporation
//
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#ifndef RTOPPACK_ROP_MAX_INDEX_LESS_THAN_BOUND_HPP
#define RTOPPACK_ROP_MAX_INDEX_LESS_THAN_BOUND_HPP
#include "RTOpPack_ROpMaxIndex.hpp"
#include "Teuchos_StandardMemberCompositionMacros.hpp"
namespace RTOpPack {
/** \brief . */
template<class Scalar>
class ROpMaxIndexLessThanBoundEleWiseReductionOp {
public:
/** \brief . */
ROpMaxIndexLessThanBoundEleWiseReductionOp(
const Scalar &bound = ScalarTraits<Scalar>::zero()
)
:bound_(bound)
{}
/** \brief . */
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_;
};
/** \brief Returns the maximum element less than some bound along with
* its index: <tt>result.scalar = x(k)</tt> and <tt>result.index =
* k</tt> such that <tt>x(k) >= x(i)</tt> for all <tt>i</tt> where
* <tt>x(i) < bound</tt> and <tt>k</tt> is the minimum index to break
* ties.
*
* If no element is less than <tt>bound</tt> then <tt>results.index <
* 0</tt>.
*/
template<class Scalar>
class ROpMaxIndexLessThanBound
: public ROp_1_CoordVariantScalarReduction<
Scalar,
ScalarIndex<Scalar>,
ROpMaxIndexLessThanBoundEleWiseReductionOp<Scalar>,
ROpMaxIndexReductObjReductionOp<Scalar> >
{
public:
/** \brief . */
ROpMaxIndexLessThanBound(
const Scalar &bound_in = Teuchos::ScalarTraits<Scalar>::zero()
)
{
this->setOpNameBase("ROpMaxIndexLessThanBound");
bound(bound_in);
this->initReductObjValue(
ScalarIndex<Scalar>(-ScalarTraits<Scalar>::rmax(), -1));
}
/** \brief . */
void bound(const Scalar& bound_in)
{
this->setEleWiseReduction(
ROpMaxIndexLessThanBoundEleWiseReductionOp<Scalar>(bound_in)
);
}
/** \brief . */
ScalarIndex<Scalar> operator()(const ReductTarget& reduct_obj ) const
{ return this->getRawVal(reduct_obj); }
};
} // namespace RTOpPack
#endif // RTOPPACK_ROP_MAX_INDEX_LESS_THAN_BOUND_HPP
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