Function copy

src/targets/gpu/kernels/include/migraphx/kernels/algorithm.hpp:83–90

template <class InputIt, class OutputIt>
constexpr OutputIt copy(InputIt first, InputIt last, OutputIt d_first)
{
    while(first != last)
    {
        *d_first++ = *first++;
    }
    return d_first;
}

template <class InputIt, class OutputIt, class UnaryPredicate>
constexpr OutputIt copy_if(InputIt first, InputIt last, OutputIt d_first, UnaryPredicate pred)