std::layout_right::mapping<Extents>:: operator()
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template
<
class
...
Indices
>
constexpr index_type operator ( ) ( Indices... indices ) const noexcept ; |
(since C++23) | |
Maps the multidimensional index indices into an offset value.
Equivalent to return ( ( static_cast < index_type > ( indices ) * stride ( P ) ) + ... + 0 ) ; where P is a pack such that std:: is_same_v < std:: index_sequence_for < Indices... > , std:: index_sequence < P... >> is true .
This overload participates in overload resolution only if :
- sizeof... ( Indices ) == extents_type :: rank ( ) is true ,
- ( std:: is_convertible_v < Indices, index_type > && ... ) is true , and
- ( std:: is_nothrow_constructible_v < index_type, Indices > && ... ) is true .
If extents_type :: index-cast ( i ) is not a multidimensional index in extents ( ) , the behavior is undefined.
Contents |
Parameters
| indices | - | the multidimensional index in the underlying extents object |
Return value
The offset value.
Example
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This section is incomplete
Reason: no example |
See also
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maps a multidimensional index into an offset value
(public member function of
std::layout_left::mapping<Extents>
)
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maps a multidimensional index into an offset value
(public member function of
std::layout_stride::mapping<Extents>
)
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accesses an element at the specified multidimensional index
(public member function of
std::mdspan<T,Extents,LayoutPolicy,AccessorPolicy>
)
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