Function sign_imp

tensorflow/compiler/xla/tests/half_test.cc:70–73

}

half sign_imp(half value) {
  const float x(std::move(value));
  return half((x < .0) ? -1 : (x > .0));
}

half round_imp(half value) {
  return half(std::round(static_cast<float>(std::move(value))));