NAME¶

std::experimental::simd::operator[] - std::experimental::simd::operator[]

Synopsis¶

reference operator[]( std::size_t i ); (1) (parallelism TS v2)
value_type operator[]( std::size_t i ) const; (2) (parallelism TS v2)

The subscript operators allow reading and writing single elements of a simd.

1) Returns a reference proxy to the i-th element. This proxy type should not be
captured into an lvalue. Lvalues of simd::reference can only convert to value_type.
Rvalues of simd::reference overload assignment and all compound assignment operators
as well as swap.
2) Returns a prvalue of the i-th element. In contrast to containers, which contain
objects of type value_type, a simd is not a container of individual objects and
therefore cannot return an lvalue-reference.

Parameters¶

i - the element index. Required to be less than size()

Example¶

// Run this code

#include <cstddef>
#include <cstdint>
#include <experimental/simd>
#include <iostream>
namespace stdx = std::experimental;

int main()
{
const stdx::native_simd<std::int64_t> a = 3;
for (std::size_t i = 0; i != a.size(); ++i)
std::cout << a[i] << ' ';
std::cout << '\n';
}

Possible output:¶

3 3 3 3 3 3 3 3