tvmet::loop::gemm< Rows1, Cols1, Cols2 > Class Template Reference

#include <tvmet/loop/Gemm.h>

List of all members.

Detailed Description

template<std::size_t Rows1, std::size_t Cols1, std::size_t Cols2>
class tvmet::loop::gemm< Rows1, Cols1, Cols2 >

class for matrix-matrix product using loop unrolling.

using formula

$M_1\,M_2$

Example:

 template<class T, std::size_t Rows1, std::size_t Cols1, std::size_t Cols2>
 inline
 void
 prod(const Matrix<T, Rows1, Cols1>& lhs, const Matrix<T, Cols1, Cols2>& rhs,
  Matrix<T, Rows1, Cols2>& dest)
 {
   for (std::size_t i = 0; i != Rows1; ++i) {
     for (std::size_t j = 0; j != Cols2; ++j) {
       dest(i, j) = tvmet::loop::gemm<Rows1, Cols1, Cols2>().prod(lhs, rhs, i, j);
     }
   }
 }

Note:: The number of rows of rhs matrix have to be equal to cols of lhs matrix. The result is a (Rows1 x Cols2) matrix.

Public Member Functions

gemm ()

Static Public Member Functions

template<class E1, class E2>

static PromoteTraits< typename
E1::value_type, typename E2::value_type
>::value_type prod (const E1 &lhs, const E2 &rhs, std::size_t i, std::size_t j)

Private Types

enum { count = Cols1, N = (count+7)/8 }

Private Member Functions

gemm (const gemm &)

gemm & operator= (const gemm &)