Function JAVASTYLE_CLZ

Bcore/src/main/cpp/base/bit_utils.h:61–65

// Similar to CLZ except that on zero input it returns bitwidth and supports signed integers.
template<typename T>
constexpr int JAVASTYLE_CLZ(T x) {
  static_assert(std::is_integral<T>::value, "T must be integral");
  using unsigned_type = typename std::make_unsigned<T>::type;
  return (x == 0) ? BitSizeOf<T>() : CLZ(static_cast<unsigned_type>(x));
}

template<typename T>
constexpr int CTZ(T x) {