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C++ named requirements: LayoutMappingPolicy (since C++23)
LayoutMappingPolicy is a type used to specify layout policy of std::mdspan. It provides a member alias template whose specialization is a LayoutMapping type.
[edit] Requirements
A type MP satisfies LayoutMappingPolicy if the type requirements shown below are valid:
[edit] Legend Type Definition MP a layout mapping policy class M a layout mapping class E a specialization of std::extents [edit] Type requirements
- MP::mapping<E> is valid and denotes a type
M that satisfies LayoutMapping.
- M::layout_type is valid and denotes a type
MP.
- M::extents_type is valid and denotes a type
E.
[edit] Standard library
The following standard library types satisfy LayoutMappingPolicy requirements:
column-major multidimensional array layout mapping policy; leftmost extent has stride 1
(class) [edit] row-major multidimensional array layout mapping policy; rightmost extent has stride 1
(class) [edit] a layout mapping policy with user-defined strides
(class) [edit] column-major layout mapping policy with padding stride that can be greater than or equal to the leftmost extent
(class template) [edit] row-major layout mapping policy with padding stride that can be greater than or equal to the rightmost extent
(class template) [edit] std::mdspan layout mapping policy that swaps the rightmost two indices, extents, and strides of any unique layout mapping policy
(class template) [edit] std::mdspan layout mapping policy that represents a square matrix that stores only the entries in one triangle, in a packed contiguous format
(class template) [edit]
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