Struct BitPackedInts 

pub struct BitPackedInts { /* private fields */ }

Bit-packed integer array.

Stores integers using a fixed number of bits per value, determined by the maximum value in the array.

Implementations

impl BitPackedInts

pub fn pack(values: &[u64]) -> Self

Packs a slice of u64 values using the minimum bits needed.

pub fn pack_with_bits(values: &[u64], bits_per_value: u8) -> Self

Packs values using a specified bit width.

Panics

Panics if any value doesn’t fit in the specified bit width.

pub fn unpack(&self) -> Vec<u64>

Unpacks all values back to u64.

pub fn get(&self, index: usize) -> Option<u64>

Gets a single value at the given index.

pub fn len(&self) -> usize

Returns the number of values.

pub fn is_empty(&self) -> bool

Returns whether the encoding is empty.

pub fn bits_per_value(&self) -> u8

Returns the number of bits per value.

pub fn data(&self) -> &[u64]

Returns the raw packed data.

pub fn compression_ratio(&self) -> f64

Returns the compression ratio compared to storing full u64s.

pub fn bits_needed(value: u64) -> u8

Returns the number of bits needed to represent a value.

pub fn to_bytes(&self) -> Vec<u8>

Serializes to bytes.

pub fn from_bytes(bytes: &[u8]) -> Result<Self>

Deserializes from bytes.

Trait Implementations

impl Clone for BitPackedInts

fn clone(&self) -> BitPackedInts

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BitPackedInts

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.