# Package org.apache.ignite.internal.processors.query.stat.hll.util

Interface Summary
LongIterator: A `long`-based iterator.

Class Summary
BitUtil: A collection of bit utilities.
BitVector: A vector (array) of bits that is accessed in units ("registers") of `width` bits which are stored as 64bit "words" (`long`s).
HLLUtil: Static functions for computing constants and parameters used in the HLL algorithm.
NumberUtil: A collection of utilities to work with numbers.