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RTOpPack_ROpMaxIndex.hpp
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00042 
00043 #ifndef RTOPPACK_ROP_MAX_INDEX_HPP
00044 #define RTOPPACK_ROP_MAX_INDEX_HPP
00045 
00046 #include "RTOpPack_RTOpTHelpers.hpp"
00047 
00048 namespace RTOpPack {
00049 
00050 
00052 template<class Scalar>
00053 class ROpMaxIndexEleWiseReductionOp {
00054 public:
00056   void operator()(const index_type i, const Scalar &v0,
00057     ScalarIndex<Scalar> &reduct) const
00058     {
00059       if(
00060         v0 > reduct.scalar
00061         ||
00062         (v0 == reduct.scalar && i < reduct.index)
00063         )
00064       {
00065         reduct = ScalarIndex<Scalar>(v0, i);
00066       }
00067     }
00068 };
00069 
00070 
00072 template<class Scalar>
00073 class ROpMaxIndexReductObjReductionOp {
00074 public:
00076   void operator()(
00077     const ScalarIndex<Scalar>& in_reduct, ScalarIndex<Scalar>& inout_reduct
00078     ) const
00079     {
00080       if(
00081         in_reduct.scalar > inout_reduct.scalar
00082         ||
00083         (
00084           in_reduct.scalar == inout_reduct.scalar
00085           &&
00086           in_reduct.index < inout_reduct.index
00087           )
00088         )
00089       {
00090         inout_reduct = in_reduct;
00091       }
00092     }
00093 };
00094 
00095 
00101 template<class Scalar>
00102 class ROpMaxIndex
00103   : public ROp_1_CoordVariantScalarReduction<
00104       Scalar,
00105       ScalarIndex<Scalar>,
00106       ROpMaxIndexEleWiseReductionOp<Scalar>,
00107       ROpMaxIndexReductObjReductionOp<Scalar> >
00108 {
00109 public:
00111   ROpMaxIndex()
00112     {
00113       this->setOpNameBase("ROpMaxIndex");
00114       this->initReductObjValue(
00115         ScalarIndex<Scalar>(-ScalarTraits<Scalar>::rmax(), -1));
00116     }
00118   ScalarIndex<Scalar> operator()(const ReductTarget& reduct_obj) const
00119     { return this->getRawVal(reduct_obj); }
00120 };
00121 
00122 
00123 } // namespace RTOpPack
00124 
00125 
00126 #endif // RTOPPACK_ROP_MAX_INDEX_HPP
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