Function Log2Ceiling

tensorflow/core/lib/core/bits.h:79–85

#endif

inline int Log2Ceiling(uint32 n) {
  int floor = Log2Floor(n);
  if (n == (n & ~(n - 1)))  // zero or a power of two
    return floor;
  else
    return floor + 1;
}

inline int Log2Ceiling64(uint64 n) {
  int floor = Log2Floor64(n);