Function format_decimal

include/fmt/format.h:1257–1261

template <typename Char, typename UInt>
FMT_CONSTEXPR FMT_INLINE auto format_decimal(Char* out, UInt value,
                                             int num_digits) -> Char* {
  do_format_decimal(out, value, num_digits);
  return out + num_digits;
}

template <typename Char, typename UInt, typename OutputIt,
          FMT_ENABLE_IF(!std::is_pointer<remove_cvref_t<OutputIt>>::value)>