std::layout_left_padded

 

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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

 

Defined in header <mdspan>
template< std::size_t PaddingValue = std::dynamic_extent > struct layout_left_padded;		(since C++26)

Every specialization of layout_left_padded is a LayoutMappingPolicy and trivial type which provides a layout mapping that is similar to layout_left::mapping except that it has a padding stride.

Let m be the instance of the mapping type layout_left_padded::mapping. The padding stride of the mapping is the second stride m.stride(1) which is guaranteed to be at least the first extent value m.extent(0), called extent to pad.

Member class templates

mapping

a layout mapping of layout_left_padded (public member class template)

See also

layout_left (C++23)	column-major multidimensional array layout mapping policy; leftmost extent has stride 1 (class)
layout_stride (C++23)	a layout mapping policy with user-defined strides (class)