Function to_lower_ascii

test-app/runtime/src/main/cpp/ada/ada.cpp:10466–10490

}

constexpr bool to_lower_ascii(char* input, size_t length) noexcept {
  uint64_t broadcast_80 = broadcast(0x80);
  uint64_t broadcast_Ap = broadcast(128 - 'A');
  uint64_t broadcast_Zp = broadcast(128 - 'Z' - 1);
  uint64_t non_ascii = 0;
  size_t i = 0;

  for (; i + 7 < length; i += 8) {
    uint64_t word{};
    memcpy(&word, input + i, sizeof(word));
    non_ascii |= (word & broadcast_80);
    word ^=
        (((word + broadcast_Ap) ^ (word + broadcast_Zp)) & broadcast_80) >> 2;
    memcpy(input + i, &word, sizeof(word));
  }
  if (i < length) {
    uint64_t word{};
    memcpy(&word, input + i, length - i);
    non_ascii |= (word & broadcast_80);
    word ^=
        (((word + broadcast_Ap) ^ (word + broadcast_Zp)) & broadcast_80) >> 2;
    memcpy(input + i, &word, length - i);
  }
  return non_ascii == 0;
}
#if ADA_NEON
ada_really_inline bool has_tabs_or_newline(
    std::string_view user_input) noexcept {