Function Abs

cpp/src/arrow/util/formatting.h:195–197

template <typename Int, typename UInt = typename std::make_unsigned<Int>::type>
constexpr UInt Abs(Int value) {
  return value < 0 ? ~static_cast<UInt>(value) + 1 : static_cast<UInt>(value);
}

template <typename Int>
constexpr size_t Digits10(Int value) {