std::extents<IndexType,Extents...>::fwd-prod-of-extents

 

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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 extentsdextentsdims (C++26) default_accessor 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

 

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extents::extents

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extents::rank

extents::rank_dynamic

extents::static_extent

extents::extent

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extents::fwd-prod-of-extents

extents::rev-prod-of-extents

extents::index-cast

extents::dynamic-index

extents::dynamic-index-inv

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extents::operator==

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constexpr std::size_t rank_type /*fwd-prod-of-extents*/( rank_type i ) const noexcept;		(since C++23) (exposition only*)

Returns the product of the sizes of extents with index less than i. The behavior is undefined if i <= rank() is false.

Parameters

i

-

The end index of the range of extents to be multiplied together.

Return value

If i > 0 is true, return the product of extent(k) for all k in range [​0​, i), otherwise 1.

See also

rev-prod-of-extents

returns the product of extents size in range [i + 1, rank()) (exposition-only member function*)