Tiny Vector Matrix library using Expression Templates

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tvmet::XprMMtProduct

tvmet::XprMMtProduct< E1, Rows1, Cols1, E2, Cols2 > Class Template Reference

#include <tvmet/xpr/MMtProduct.h>

Inheritance diagram for tvmet::XprMMtProduct< E1, Rows1, Cols1, E2, Cols2 >:

Inheritance graph

[legend]Collaboration diagram for tvmet::XprMMtProduct< E1, Rows1, Cols1, E2, Cols2 >:

Collaboration graph

[legend]List of all members.

Detailed Description

template<class E1, std::size_t Rows1, std::size_t Cols1, class E2, std::size_t Cols2>
class tvmet::XprMMtProduct< E1, Rows1, Cols1, E2, Cols2 >

Expression for matrix-matrix product.

Using formula:

$M_1\,M_2^T$

Note:: The number of cols of rhs matrix have to be equal to cols of rhs matrix. The result is a (Rows1 x Rows2) matrix.

Public Types

enum {
  ops_lhs = E1::ops, ops_rhs = E2::ops, Rows2 = Cols1, M = Rows1 * Cols1 * Rows1,
  N = Rows1 * (Cols1 - 1) * Rows2, ops_plus = M * NumericTraits<value_type>::ops_plus, ops_muls = N * NumericTraits<value_type>::ops_muls, ops = ops_plus + ops_muls,
  use_meta = Rows1*Rows2 < TVMET_COMPLEXITY_MM_TRIGGER ? true : false
}

Complexity counter. More...

typedef PromoteTraits< typename
E1::value_type, typename E2::value_type
>::value_type value_type

Public Member Functions

XprMMtProduct (const E1 &lhs, const E2 &rhs)

Constructor.

value_type operator() (std::size_t i, std::size_t j) const

index operator for arrays/matrices

void print_xpr (std::ostream &os, std::size_t l=0) const

Private Member Functions

XprMMtProduct ()

XprMMtProduct & operator= (const XprMMtProduct &)

Static Private Member Functions

static value_type do_gemmt (dispatch< true >, const E1 &lhs, const E2 &rhs, std::size_t i, std::size_t j)

Wrapper for meta gemm.

static value_type do_gemmt (dispatch< false >, const E1 &lhs, const E2 &rhs, std::size_t i, std::size_t j)

Wrapper for loop gemm.

Private Attributes

const E1 m_lhs

const E2 m_rhs

Member Typedef Documentation

template<class E1, std::size_t Rows1, std::size_t Cols1, class E2, std::size_t Cols2>

typedef PromoteTraits< typename E1::value_type, typename E2::value_type >::value_type tvmet::XprMMtProduct< E1, Rows1, Cols1, E2, Cols2 >::value_type

Member Enumeration Documentation

template<class E1, std::size_t Rows1, std::size_t Cols1, class E2, std::size_t Cols2>

anonymous enum

Complexity counter.

Enumerator:

ops_lhs
ops_rhs
Rows2
M
N
ops_plus
ops_muls
ops
use_meta

Constructor & Destructor Documentation

template<class E1, std::size_t Rows1, std::size_t Cols1, class E2, std::size_t Cols2>

tvmet::XprMMtProduct< E1, Rows1, Cols1, E2, Cols2 >::XprMMtProduct ( ) [private]

template<class E1, std::size_t Rows1, std::size_t Cols1, class E2, std::size_t Cols2>

tvmet::XprMMtProduct< E1, Rows1, Cols1, E2, Cols2 >::XprMMtProduct	(	const E1 &	lhs,
		const E2 &	rhs
	)			`[inline, explicit]`

Constructor.

Member Function Documentation

template<class E1, std::size_t Rows1, std::size_t Cols1, class E2, std::size_t Cols2>

XprMMtProduct& tvmet::XprMMtProduct< E1, Rows1, Cols1, E2, Cols2 >::operator= ( const XprMMtProduct< E1, Rows1, Cols1, E2, Cols2 > & ) [private]

template<class E1, std::size_t Rows1, std::size_t Cols1, class E2, std::size_t Cols2>

static value_type tvmet::XprMMtProduct< E1, Rows1, Cols1, E2, Cols2 >::do_gemmt	(	dispatch< true >	,
		const E1 &	lhs,
		const E2 &	rhs,
		std::size_t	i,
		std::size_t	j
	)			`[inline, static, private]`

Wrapper for meta gemm.

template<class E1, std::size_t Rows1, std::size_t Cols1, class E2, std::size_t Cols2>

static value_type tvmet::XprMMtProduct< E1, Rows1, Cols1, E2, Cols2 >::do_gemmt	(	dispatch< false >	,
		const E1 &	lhs,
		const E2 &	rhs,
		std::size_t	i,
		std::size_t	j
	)			`[inline, static, private]`

Wrapper for loop gemm.

template<class E1, std::size_t Rows1, std::size_t Cols1, class E2, std::size_t Cols2>

value_type tvmet::XprMMtProduct< E1, Rows1, Cols1, E2, Cols2 >::operator()	(	std::size_t	i,
		std::size_t	j
	)			const `[inline]`

index operator for arrays/matrices

template<class E1, std::size_t Rows1, std::size_t Cols1, class E2, std::size_t Cols2>

void tvmet::XprMMtProduct< E1, Rows1, Cols1, E2, Cols2 >::print_xpr	(	std::ostream &	os,
		std::size_t	l = `0`
	)			const `[inline]`

Member Data Documentation

template<class E1, std::size_t Rows1, std::size_t Cols1, class E2, std::size_t Cols2>

const E1 tvmet::XprMMtProduct< E1, Rows1, Cols1, E2, Cols2 >::m_lhs [private]

template<class E1, std::size_t Rows1, std::size_t Cols1, class E2, std::size_t Cols2>

const E2 tvmet::XprMMtProduct< E1, Rows1, Cols1, E2, Cols2 >::m_rhs [private]

Author: