Function JAVASTYLE_CTZ

Bcore/src/main/cpp/base/bit_utils.h:80–84

// Similar to CTZ except that on zero input it returns bitwidth and supports signed integers.
template<typename T>
constexpr int JAVASTYLE_CTZ(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>() : CTZ(static_cast<unsigned_type>(x));
}

// Return the number of 1-bits in `x`.
template<typename T>