std::extents<IndexType,Extents...>::index-cast - cppreference.com (original) (raw)

| template< class OtherIndexType > static constexpr auto /*index-cast*/( OtherIndexType&& i ) noexcept; | | (since C++23) (exposition only*) | | -------------------------------------------------------------------------------------------------------- | | --------------------------------- |

Casts the index i of type OtherIndexType into a certain integral type.

It is equivalent to:

• return i;, if OtherIndexType is an integral type other than bool and
• return static_cast<index_type>(i); otherwise.

[edit] Parameters

[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.