Namespaces
Variants
Actions

std::extents<IndexType,Extents...>::static_extent

From cppreference.com
< cpp‎ | container‎ | mdspan‎ | extents
 
 
 
std::mdspan
 
 
static constexpr std::size_t static_extent( rank_type i ) noexcept;
(since C++23)

Returns static extent size of an extents at the rank index i. If the rank index i is a dynamic extent, returns std::dynamic_extent.

[edit] Parameters

i - The rank index to get the static extent size of

[edit] Return value

The static extent size or std::dynamic_extent value.

[edit] Example

Run this code
#include <iostream>
#include <mdspan>
 
int main()
{
 std::extents <int, 1, 2> e1;
 std::extents <int, 3, std::dynamic_extent, std::dynamic_extent > e2(4, 5);
 std::cout << e1.static_extent(0) << ", " << e1.static_extent(1) << '\n';
 std::cout << (e2.static_extent(0) == std::dynamic_extent ) << ", "
 << (e2.static_extent(1) == std::dynamic_extent ) << ", "
 << (e2.static_extent(2) == std::dynamic_extent ) << '\n';
}

Output:

1, 2
0, 1, 1

[edit] See also

returns dynamic extent size of an extents at a certain rank index
(public member function) [edit]
(C++11)
obtains the size of an array type along a specified dimension
(class template) [edit]
Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/container/mdspan/extents/static_extent&oldid=157195"

AltStyle によって変換されたページ (->オリジナル) /