23 Containers library [containers]

23.7 Views [views]

23.7.3 Multidimensional access [views.multidim]

23.7.3.4 Layout mapping [mdspan.layout]

23.7.3.4.8 Class template layout_left_padded​::​mapping [mdspan.layout.leftpad]

23.7.3.4.8.2 Exposition-only members [mdspan.layout.leftpad.expo]

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static constexpr size_t static-padding-stride = see below;
1
#
The value is
  • (1.1)
    0, if rank_ equals zero or one;
  • (1.2)
    otherwise, dynamic_extent, if padding_value or first-static-extent equals dynamic_extent;
  • (1.3)
    otherwise, the size_t value which is LEAST-MULTIPLE-AT-LEAST(padding_value, first-static-extent).
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index_type stride-1 = static-padding-stride;
2
#
Recommended practice: Implementations should not store this value if static-padding-stride is not dynamic_extent.
[Note 1: 
Using extents<index_type, static-padding-stride> instead of index_type as the type of stride-1 would achieve this.
— end note]