std::extents<IndexType,Extents...>::index-cast
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std::extents
extents::index-cast
template< class OtherIndexType >
static constexpr auto /*index-cast*/( OtherIndexType&& i ) noexcept;
(since C++23) static constexpr auto /*index-cast*/( OtherIndexType&& i ) noexcept;
(exposition only*)
Casts the index i of type OtherIndexType into a certain integral type.
It is equivalent to:
- return i;, if
OtherIndexTypeis an integral type other than bool and - return static_cast<index_type>(i); otherwise.
[edit] Parameters
i
-
the index to be cast
[edit] Return value
Cast index.
[edit] Notes
A call to this function will always return an integral type other than bool. Integer-class types can use the static_cast branch without loss of precision because this function's call sites are already constrained on the convertibility of OtherIndexType to index_type.