STK::hidden::ProductDispatcher< Lhs, Rhs, Result, lhsStructure_, RhsStructure_ > Struct Template Reference

Dispatcher allowing to choose th e way to multiply two expressions. More...

#include <STK_ProductDispatcher.h>

Public Types
enum	{ sizeRows_ = Traits<Result>::sizeRows_ , sizeCols_ = Traits<Result>::sizeCols_ , orient_ = Traits<Result>::orient_ , storage_ = Traits<Result>::storage_ }
typedef MultCoefImpl< Lhs, Rhs, Result >	MultCoeff

Static Public Member Functions
static void	run (Lhs const &lhs, Rhs const &rhs, Result &res)
	loop over the columns of rhs first

Detailed Description

template<class Lhs, class Rhs, class Result, int lhsStructure_ = hidden::Traits<Lhs>::structure_, int RhsStructure_ = hidden::Traits<Rhs>::structure_>
struct STK::hidden::ProductDispatcher< Lhs, Rhs, Result, lhsStructure_, RhsStructure_ >

Dispatcher allowing to choose th e way to multiply two expressions.

Note

In the some cases, e.g. when some of the structures are triangular for examples, we use the usual matrix multiplication formula. This can be enhanced in future versions.

Definition at line 396 of file STK_ProductDispatcher.h.

Member Typedef Documentation

MultCoeff

template<class Lhs , class Rhs , class Result , int lhsStructure_ = hidden::Traits<Lhs>::structure_, int RhsStructure_ = hidden::Traits<Rhs>::structure_>

typedef MultCoefImpl<Lhs, Rhs, Result> STK::hidden::ProductDispatcher< Lhs, Rhs, Result, lhsStructure_, RhsStructure_ >::MultCoeff

Definition at line 406 of file STK_ProductDispatcher.h.

Member Enumeration Documentation

anonymous enum

template<class Lhs , class Rhs , class Result , int lhsStructure_ = hidden::Traits<Lhs>::structure_, int RhsStructure_ = hidden::Traits<Rhs>::structure_>

anonymous enum

Enumerator
sizeRows_
sizeCols_
orient_
storage_

Definition at line 398 of file STK_ProductDispatcher.h.

  {
    // structure_ = Traits<Result>::structure_,
    sizeRows_  = Traits<Result>::sizeRows_,
    sizeCols_  = Traits<Result>::sizeCols_,
    orient_    = Traits<Result>::orient_,
    storage_   = Traits<Result>::storage_
  };

Member Function Documentation

run()

template<class Lhs , class Rhs , class Result , int lhsStructure_ = hidden::Traits<Lhs>::structure_, int RhsStructure_ = hidden::Traits<Rhs>::structure_>

static void STK::hidden::ProductDispatcher< Lhs, Rhs, Result, lhsStructure_, RhsStructure_ >::run ( Lhs const &  lhs, Rhs const &  rhs, Result &  res  )

inlinestatic

loop over the columns of rhs first

Definition at line 409 of file STK_ProductDispatcher.h.

  {
    if (lhs.sizeRows()<rhs.sizeCols())
    {
      for (int j=rhs.beginCols(); j< rhs.endCols(); j++)
      {
        Range const r = res.rangeRowsInCol(j);
//         int const begin = res.rangeRowsInCol(j).begin(), end = res.rangeRowsInCol(j).end();
        for (int i=r.begin(); i< r.end(); i++)
        { MultCoeff::dot(lhs, rhs, res, i, j);}
      }
    }
    else
    {
      for (int i=lhs.beginRows(); i< lhs.endRows(); i++)
      {
        Range const r = res.rangeColsInRow(i);
        for (int j=r.begin(); j< r.end(); j++)
        { MultCoeff::dot(lhs, rhs, res, i, j);}
 //       stk_cout << "(begin,end)=("<<begin<<","<<end<<")\n";
      }
 //     stk_cout << "product done\n";
    }
  }

References STK::RangeBase< Derived >::begin(), and STK::TRange< UnknownSize >::end().

Referenced by STK::ArrayByArrayProduct< Lhs, Rhs >::ArrayByArrayProduct(), STK::ArrayByVectorProduct< Lhs, Rhs >::ArrayByVectorProduct(), and STK::PointByArrayProduct< Lhs, Rhs >::PointByArrayProduct().

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The documentation for this struct was generated from the following file:

• STK_ProductDispatcher.h