A transposition expression. More...

#include <gemm_expr.hpp>

Inheritance diagram for etl::gemm_expr< A, B, Strassen >:

Collaboration diagram for etl::gemm_expr< A, B, Strassen >:

Public Types
using	value_type = value_t< A >
	The type of value of the expression.

using	this_type = gemm_expr< A, B, Strassen >
	The type of this expression.

using	base_type = base_temporary_expr_bin< this_type, A, B >
	The base type.

using	left_traits = decay_traits< A >
	The traits of the sub type.

Public Types inherited from etl::base_temporary_expr_bin< gemm_expr< A, B, Strassen >, A, B >
using	this_type = base_temporary_expr_bin< gemm_expr< A, B, Strassen >, A, B >
	This type.

using	base_type = base_temporary_expr< gemm_expr< A, B, Strassen >, true >
	The base type.

Public Types inherited from etl::base_temporary_expr< gemm_expr< A, B, Strassen >, true >
using	derived_t = gemm_expr< A, B, Strassen >
	The derived type.

using	value_type = typename decay_traits< gemm_expr< A, B, Strassen > >::value_type
	The value type.

using	result_type = temporary_detail::expr_result_t< Fast, gemm_expr< A, B, Strassen > >
	The result type.

using	memory_type = value_type *
	The memory type.

using	const_memory_type = const value_type *
	The const memory type.

using	vec_type = typename VV::template vec_type< value_type >
	The vectorization type for VV.

Public Types inherited from etl::value_testable< D >
using	derived_t = D
	The derived type.

Public Types inherited from etl::dim_testable< D >
using	derived_t = D
	The derived type.

Public Types inherited from etl::iterable< D, DMA >
using	derived_t = D
	The derived type.

Public Member Functions
	gemm_expr (A a, B b)
	Construct a new expression. More...

	gemm_expr (A a, B b, value_type alpha)
	Construct a new expression. More...

template<typename AA , typename BB , typename C >
void	apply_raw (AA &&a, BB &&b, C &&c) const
	Compute C = trans(A) * trans(B) More...

template<etl_expr C>
void	assign_to (C &&c) const
	Assign to a matrix of the same storage order. More...

template<etl_expr L>
void	assign_add_to (L &&lhs) const
	Add to the given left-hand-side expression. More...

template<etl_expr L>
void	assign_sub_to (L &&lhs) const
	Sub from the given left-hand-side expression. More...

template<etl_expr L>
void	assign_mul_to (L &&lhs) const
	Multiply the given left-hand-side expression. More...

template<etl_expr L>
void	assign_div_to (L &&lhs) const
	Divide the given left-hand-side expression. More...

template<etl_expr L>
void	assign_mod_to (L &&lhs) const
	Modulo the given left-hand-side expression. More...

Public Member Functions inherited from etl::base_temporary_expr_bin< gemm_expr< A, B, Strassen >, A, B >
	base_temporary_expr_bin (A a, B b)
	Construct a new expression. More...

	base_temporary_expr_bin (const base_temporary_expr_bin &e)
	Construct a new expression by copy. More...

	base_temporary_expr_bin (base_temporary_expr_bin &&e) noexcept
	Construct a new expression by move. More...

bool	alias (const E &rhs) const
	Test if this expression aliases with the given expression. More...

std::add_lvalue_reference_t< A >	a ()
	Returns the sub expression. More...

cpp::add_const_lvalue_t< A >	a () const
	Returns the sub expression. More...

std::add_lvalue_reference_t< B >	b ()
	Returns the sub expression. More...

cpp::add_const_lvalue_t< B >	b () const
	Returns the sub expression. More...

void	visit (detail::evaluator_visitor &visitor) const
	Apply the given visitor to this expression and its descendants. More...

Public Member Functions inherited from etl::base_temporary_expr< gemm_expr< A, B, Strassen >, true >
	base_temporary_expr ()
	Construct a new base_temporary_expr.

	base_temporary_expr (const base_temporary_expr &expr)=default
	Copy construct a new base_temporary_expr.

	base_temporary_expr (base_temporary_expr &&rhs)
	Move construct a base_temporary_expr The right hand side cannot be used anymore after ths move. More...

base_temporary_expr &	operator= (const base_temporary_expr &)=delete

base_temporary_expr &	operator= (base_temporary_expr &&)=delete

value_type	operator[] (size_t i) const
	Returns the element at the given index. More...

value_type	read_flat (size_t i) const
	Returns the value at the given index This function never alters the state of the container. More...

Public Member Functions inherited from etl::value_testable< D >
derived_t &	as_derived () noexcept
	Returns a reference to the derived object, i.e. the object using the CRTP injector. More...

const derived_t &	as_derived () const noexcept
	Returns a reference to the derived object, i.e. the object using the CRTP injector. More...

bool	is_finite () const noexcept
	Indicates if the expression contains only finite values. More...

bool	is_zero () const noexcept
	Indicates if the expression contains only zero values. More...

bool	is_diagonal () const noexcept
	Indicates if the expression is diagonal. More...

bool	is_uniform () const noexcept
	Indicates if the expression is uniform, i.e. all elements are of the same value. More...

Public Member Functions inherited from etl::dim_testable< D >
derived_t &	as_derived () noexcept
	Returns a reference to the derived object, i.e. the object using the CRTP injector. More...

const derived_t &	as_derived () const noexcept
	Returns a reference to the derived object, i.e. the object using the CRTP injector. More...

bool	is_square () const noexcept
	Indicates if the expressions is of square dimensions (only for 2d expression) More...

bool	is_rectangular () const noexcept
	Indicates if the expressions is of rectangular dimensions (only for 2d expression) More...

bool	is_sub_square () const noexcept
	Indicates if the expressions is of square dimensions, ignoring the first dimension (only for 3d expression) More...

bool	is_sub_rectangular () const noexcept
	Indicates if the expressions is of rectangular dimensions, ignoring the first dimension (only for 3d expression) More...

bool	is_symmetric () const noexcept
	Indicates if the given expression is a symmetric matrix or not. More...

bool	is_lower_triangular () const noexcept
	Indicates if the given expression is a lower triangular matrix or not. More...

bool	is_uni_lower_triangular () const noexcept
	Indicates if the given expression is a uni lower triangular matrix or not. More...

bool	is_strictly_lower_triangular () const noexcept
	Indicates if the given expression is a strictly lower triangular matrix or not. More...

bool	is_upper_triangular () const noexcept
	Indicates if the given expression is a upper triangular matrix or not. More...

bool	is_uni_upper_triangular () const noexcept
	Indicates if the given expression is a uni upper triangular matrix or not. More...

bool	is_strictly_upper_triangular () const noexcept
	Indicates if the given expression is a strictly upper triangular matrix or not. More...

bool	is_triangular () const noexcept
	Indicates if the given expression is a triangular matrix or not. More...

Public Member Functions inherited from etl::iterable< D, DMA >
derived_t &	as_derived () noexcept
	Returns a reference to the derived object, i.e. the object using the CRTP injector. More...

const derived_t &	as_derived () const noexcept
	Returns a reference to the derived object, i.e. the object using the CRTP injector. More...

auto	begin () noexcept
	Return an iterator to the first element of the matrix. More...

auto	end () noexcept
	Return an iterator to the past-the-end element of the matrix. More...

auto	cbegin () const noexcept
	Return an iterator to the first element of the matrix. More...

auto	cend () const noexcept
	Return an iterator to the past-the-end element of the matrix. More...

auto	begin () const noexcept
	Return an iterator to the first element of the matrix. More...

auto	end () const noexcept
	Return an iterator to the past-the-end element of the matrix. More...

Static Public Member Functions
template<etl_expr C>
static void	check ([[maybe_unused]] const A &a, [[maybe_unused]] const B &b, [[maybe_unused]] const C &c)
	Assert for the validity of the matrix-matrix multiplication operation. More...

template<typename AA , typename BB , typename C >
static constexpr gemm_impl	select_default_gemm_impl (bool no_gpu)
	Select an implementation of GEMM, not considering local context. More...

template<typename AA , typename BB , typename C >
static constexpr gemm_impl	select_gemm_impl ()
	Select the best implementation of GEMM. More...

Public Attributes
const value_type	alpha
	The alpha multiplicator.

Public Attributes inherited from etl::base_temporary_expr_bin< gemm_expr< A, B, Strassen >, A, B >
A	_a
	The sub expression reference.

B	_b
	The sub expression reference.

Static Public Attributes
static constexpr auto	storage_order = left_traits::storage_order
	The sub storage order.

static constexpr bool	gpu_computable = cublas_enabled && all_homogeneous<A, B>
	Indicates if the temporary expression can be directly evaluated using only GPU.

Friends
std::ostream &	operator<< (std::ostream &os, const gemm_expr &expr)
	Print a representation of the expression on the given stream. More...

Additional Inherited Members
Protected Member Functions inherited from etl::base_temporary_expr< gemm_expr< A, B, Strassen >, true >
derived_t &	as_derived () noexcept
	Returns a reference to the derived object, i.e. the object using the CRTP injector. More...

const derived_t &	as_derived () const noexcept
	Returns a reference to the derived object, i.e. the object using the CRTP injector. More...

bool	is_allocated () const noexcept
	Indicates if the temporary has been allocated. More...

bool	is_evaluated () const noexcept
	Indicates if the temporary has been evaluated. More...

void	evaluate () const
	Evaluate the expression, if not evaluated. More...

void	allocate_temporary () const
	Allocate the necessary temporaries, if necessary.

result_type *	dyn_allocate (std::index_sequence< I... >) const
	Allocate the dynamic temporary.

result_type *	allocate () const
	Allocate the temporary.

Protected Attributes inherited from etl::base_temporary_expr< gemm_expr< A, B, Strassen >, true >
std::shared_ptr< bool >	evaluated
	Indicates if the expression has been evaluated.

std::shared_ptr< result_type >	_c
	The result reference.

Detailed Description

template<etl_expr A, etl_expr B, bool Strassen>
struct etl::gemm_expr< A, B, Strassen >

A transposition expression.

Template Parameters

A	The transposed type

Constructor & Destructor Documentation

◆ gemm_expr() [1/2]

template<etl_expr A, etl_expr B, bool Strassen>

etl::gemm_expr< A, B, Strassen >::gemm_expr	(	A	a,
		B	b
	)

inlineexplicit

Construct a new expression.

Parameters

a	The sub expression

◆ gemm_expr() [2/2]

template<etl_expr A, etl_expr B, bool Strassen>

etl::gemm_expr< A, B, Strassen >::gemm_expr	(	A	a,
		B	b,
		value_type	alpha
	)

inlineexplicit

Construct a new expression.

Parameters

a	The sub expression

Member Function Documentation

◆ apply_raw()

template<etl_expr A, etl_expr B, bool Strassen>

template<typename AA , typename BB , typename C >

void etl::gemm_expr< A, B, Strassen >::apply_raw	(	AA &&	a,
		BB &&	b,
		C &&	c
	)		const

inline

Compute C = trans(A) * trans(B)

Parameters

a	The A matrix
b	The B matrix
c	The C matrix (output)

◆ assign_add_to()

template<etl_expr A, etl_expr B, bool Strassen>

template<etl_expr L>

void etl::gemm_expr< A, B, Strassen >::assign_add_to ( L && lhs ) const

inline

Add to the given left-hand-side expression.

Parameters

lhs	The expression to which assign

◆ assign_div_to()

template<etl_expr A, etl_expr B, bool Strassen>

template<etl_expr L>

void etl::gemm_expr< A, B, Strassen >::assign_div_to ( L && lhs ) const

inline

Divide the given left-hand-side expression.

Parameters

lhs	The expression to which assign

◆ assign_mod_to()

template<etl_expr A, etl_expr B, bool Strassen>

template<etl_expr L>

void etl::gemm_expr< A, B, Strassen >::assign_mod_to ( L && lhs ) const

inline

Modulo the given left-hand-side expression.

Parameters

lhs	The expression to which assign

◆ assign_mul_to()

template<etl_expr A, etl_expr B, bool Strassen>

template<etl_expr L>

void etl::gemm_expr< A, B, Strassen >::assign_mul_to ( L && lhs ) const

inline

Multiply the given left-hand-side expression.

Parameters

lhs	The expression to which assign

◆ assign_sub_to()

template<etl_expr A, etl_expr B, bool Strassen>

template<etl_expr L>

void etl::gemm_expr< A, B, Strassen >::assign_sub_to ( L && lhs ) const

inline

Sub from the given left-hand-side expression.

Parameters

lhs	The expression to which assign

◆ assign_to()

template<etl_expr A, etl_expr B, bool Strassen>

template<etl_expr C>

void etl::gemm_expr< A, B, Strassen >::assign_to ( C && c ) const

inline

Assign to a matrix of the same storage order.

Parameters

c	The expression to which assign

◆ check()

template<etl_expr A, etl_expr B, bool Strassen>

template<etl_expr C>

static void etl::gemm_expr< A, B, Strassen >::check	(	[[maybe_unused] ] const A &	a,
		[[maybe_unused] ] const B &	b,
		[[maybe_unused] ] const C &	c
	)

inlinestatic

Assert for the validity of the matrix-matrix multiplication operation.

Parameters

a	The left side matrix
b	The right side matrix
c	The result matrix

◆ select_default_gemm_impl()

template<etl_expr A, etl_expr B, bool Strassen>

template<typename AA , typename BB , typename C >

static constexpr gemm_impl etl::gemm_expr< A, B, Strassen >::select_default_gemm_impl ( bool no_gpu )

inlinestatic

Select an implementation of GEMM, not considering local context.

Returns: The implementation to use

◆ select_gemm_impl()

template<etl_expr A, etl_expr B, bool Strassen>

template<typename AA , typename BB , typename C >

static constexpr gemm_impl etl::gemm_expr< A, B, Strassen >::select_gemm_impl ( )

inlinestatic

Select the best implementation of GEMM.

Returns: The implementation to use

Friends And Related Function Documentation

◆ operator<<

template<etl_expr A, etl_expr B, bool Strassen>

std::ostream& operator<<	(	std::ostream &	os,
		const gemm_expr< A, B, Strassen > &	expr
	)

friend

Print a representation of the expression on the given stream.

Parameters

os	The output stream
expr	The expression to print

Returns: the output stream

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

include/etl/expr/gemm_expr.hpp

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Static Public Attributes

Friends

Additional Inherited Members

Detailed Description

template<etl_expr A, etl_expr B, bool Strassen> struct etl::gemm_expr< A, B, Strassen >

Constructor & Destructor Documentation

◆ gemm_expr() [1/2]

◆ gemm_expr() [2/2]

Member Function Documentation

◆ apply_raw()

◆ assign_add_to()

◆ assign_div_to()

◆ assign_mod_to()

◆ assign_mul_to()

◆ assign_sub_to()

◆ assign_to()

◆ check()

◆ select_default_gemm_impl()

◆ select_gemm_impl()

Friends And Related Function Documentation

◆ operator<<

template<etl_expr A, etl_expr B, bool Strassen>
struct etl::gemm_expr< A, B, Strassen >