ternary operator for clang's extended vectors

Question

I\'ve tried playing with clang\'s extended vectors. The ternary operator is supposed to work, but it is not working for me. Example:

int main()
{
  using int4 =          


        

Answer 1

In the end I went with this:

#if defined(__clang__)
template 
constexpr inline std::enable_if_t<
  !std::is_arithmetic{},
  V
>
select(V const a, V const b, U const c) noexcept
{
  return V((c & U(a)) | (~c & U(b)));
}
#else
template 
constexpr inline std::enable_if_t<
  !std::is_arithmetic{},
  V
>
select(V const a, V const b, U const c) noexcept
{
  return c ? a : b;
}
#endif

The same could have been accomplished in other ways, using the indices trick, for example, but it might not optimize very well (I didn't want any conditionals in there).