tannic::expression::Transpose< Source > Class Template Reference

Expression template for transposing two dimensions of a tensor. More...

#include <views.hpp>

Public Member Functions
constexpr	Transpose (typename Trait< Source >::Reference source, std::pair< int, int > dimensions)
	Construct a transposed view of the source tensor.
constexpr type	dtype () const
constexpr Shape const &	shape () const
constexpr Strides const &	strides () const
std::ptrdiff_t	offset () const
Tensor	forward () const

Detailed Description

template<Expression Source>
class tannic::expression::Transpose< Source >

Expression template for transposing two dimensions of a tensor.

Template Parameters

Source

The expression or tensor type being transposed.

The Transpose view swaps the shape and strides of two dimensions without moving data. This is useful for reordering axes for operations like matrix multiplication.

Example:

Tensor X(float32, {2, 3});
auto Y = transpose(X, 0, 1); // shape becomes (3, 2)
auto Z = X.transpose(0, 1); // oop syntax.

Constructor & Destructor Documentation

Transpose()

template<Expression Source>

constexpr tannic::expression::Transpose< Source >::Transpose ( typename Trait< Source >::Reference  source, std::pair< int, int >  dimensions  )

inlineconstexpr

Construct a transposed view of the source tensor.

Parameters

source	Reference to the source expression or tensor.
dimensions	A pair of dimension indices to swap.

Member Function Documentation

dtype()

template<Expression Source>

constexpr type tannic::expression::Transpose< Source >::dtype ( ) const

inlineconstexpr

Returns

The data type of the tensor elements.

Transposing does not change the element type. This value is returned from the source expression's dtype().

forward()

template<Expression Source>

Tensor tannic::expression::Transpose< Source >::forward

offset()

template<Expression Source>

std::ptrdiff_t tannic::expression::Transpose< Source >::offset ( ) const

inline

Returns

The byte offset of the transposed view from the start of the storage.

This is taken directly from the source expression’s offset() because transposing only changes how dimensions are indexed, not where the first element is stored.

shape()

template<Expression Source>

constexpr Shape const & tannic::expression::Transpose< Source >::shape ( ) const

inlineconstexpr

Returns

The shape of the transposed view.

The shape is initially copied from the source tensor, then in the constructor the two specified dimensions are swapped.

strides()

template<Expression Source>

constexpr Strides const & tannic::expression::Transpose< Source >::strides ( ) const

inlineconstexpr

Returns

The strides of the transposed view.

Strides are copied from the source tensor in the constructor, and then the strides for the two swapped dimensions are exchanged to match the new layout in memory.

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The documentation for this class was generated from the following files:

• include/tannic/views.hpp
• include/tannic/tensor.hpp