std::extents<IndexType,Extents...>::index-cast

 

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std::mdspan

Member functions mdspan::mdspan mdspan::operator= Element access mdspan::operator[] Observers mdspan::rank mdspan::rank_dynamic mdspan::static_extent mdspan::extent mdspan::size mdspan::empty mdspan::stride mdspan::extents mdspan::data_handle mdspan::mapping mdspan::accessor mdspan::is_uniquemdspan::is_exhaustivemdspan::is_stridedmdspan::is_always_uniquemdspan::is_always_exhaustivemdspan::is_always_strided

Non-member functions swap(std::mdspan) Subviews submdspan (C++26) submdspan_extents (C++26) Helper types and templates extentsdextents dims (C++26) default_accessor aligned_accessor (C++26) Layout mapping policies layout_left layout_right layout_stride layout_left_padded (C++26) layout_right_padded (C++26) Subviews helpers full_extent (C++26) strided_slice (C++26) submdspan_mapping_result (C++26) Deduction guides

 

std::extents

Member functions

extents::extents

Observers

extents::rank

extents::rank_dynamic

extents::static_extent

extents::extent

Helpers

extents::fwd-prod-of-extents

extents::rev-prod-of-extents

extents::index-cast

extents::dynamic-index

extents::dynamic-index-inv

Non-member functions

extents::operator==

Deduction guides

 

template< class OtherIndexType > static constexpr auto /*index-cast*/( OtherIndexType&& i ) noexcept;		(since C++23) (exposition only*)

Casts the index i of type OtherIndexType into a certain integral type.

It is equivalent to:

• return i;, if OtherIndexType is an integral type other than bool and
• return static_cast<index_type>(i); otherwise.

Parameters

i

-

the index to be cast

Return value

Cast index.

Notes

A call to this function will always return an integral type other than bool. Integer-class types can use the static_cast branch without loss of precision because this function's call sites are already constrained on the convertibility of OtherIndexType to index_type.

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