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RTOpPack_ROpMaxIndex.hpp
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4// RTOp: Interfaces and Support Software for Vector Reduction Transformation
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42
43#ifndef RTOPPACK_ROP_MAX_INDEX_HPP
44#define RTOPPACK_ROP_MAX_INDEX_HPP
45
46#include "RTOpPack_RTOpTHelpers.hpp"
47
48namespace RTOpPack {
49
50
52template<class Scalar>
54public:
56 void operator()(const index_type i, const Scalar &v0,
57 ScalarIndex<Scalar> &reduct) const
58 {
59 if(
60 v0 > reduct.scalar
61 ||
62 (v0 == reduct.scalar && i < reduct.index)
63 )
64 {
65 reduct = ScalarIndex<Scalar>(v0, i);
66 }
67 }
68};
69
70
72template<class Scalar>
74public:
77 const ScalarIndex<Scalar>& in_reduct, ScalarIndex<Scalar>& inout_reduct
78 ) const
79 {
80 if(
81 in_reduct.scalar > inout_reduct.scalar
82 ||
83 (
84 in_reduct.scalar == inout_reduct.scalar
85 &&
86 in_reduct.index < inout_reduct.index
87 )
88 )
89 {
90 inout_reduct = in_reduct;
91 }
92 }
93};
94
95
101template<class Scalar>
104 Scalar,
105 ScalarIndex<Scalar>,
106 ROpMaxIndexEleWiseReductionOp<Scalar>,
107 ROpMaxIndexReductObjReductionOp<Scalar> >
108{
109public:
112 {
113 this->setOpNameBase("ROpMaxIndex");
114 this->initReductObjValue(
115 ScalarIndex<Scalar>(-ScalarTraits<Scalar>::rmax(), -1));
116 }
119 { return this->getRawVal(reduct_obj); }
120};
121
122
123} // namespace RTOpPack
124
125
126#endif // RTOPPACK_ROP_MAX_INDEX_HPP
void operator()(const index_type i, const Scalar &v0, ScalarIndex< Scalar > &reduct) const
void operator()(const ScalarIndex< Scalar > &in_reduct, ScalarIndex< Scalar > &inout_reduct) const
Returns the maximum element and its index: result.scalar = x(k) and result.index = k such that x(k) >...
ScalarIndex< Scalar > operator()(const ReductTarget &reduct_obj) const
const ConcreteReductObj & getRawVal(const ReductTarget &reduct_obj) const
Base class for coordinate-variant scalar reduction RTOps with one input vector.
void setOpNameBase(const std::string &op_name_base)
Just set the operator name.
Abstract base class for all reduction objects.
Teuchos_Ordinal index_type
Simple struct for a Scalar and an Ordinal object.