Struct QuantizedVector 

pub struct QuantizedVector {
    pub binary_code_packed: Vec<u8>,
    pub ex_code_packed: Vec<u8>,
    pub ex_bits: u8,
    pub dim: usize,
    pub delta: f32,
    pub vl: f32,
    pub f_add: f32,
    pub f_rescale: f32,
    pub f_error: f32,
    pub residual_norm: f32,
    pub f_add_ex: f32,
    pub f_rescale_ex: f32,
}

Quantised representation of a vector using packed format (aligned with C++ implementation).

Binary codes and extended codes are stored in bit-packed format for memory efficiency.

• binary_code_packed: 1 bit per dimension
• ex_code_packed: ex_bits per dimension

For performance-critical search operations, unpacked codes are cached to avoid repeated unpacking overhead.

Fields

binary_code_packed: Vec<u8>

Packed binary code (1 bit per element)

ex_code_packed: Vec<u8>

Packed extended code (ex_bits per element)

ex_bits: u8

Number of extended bits per element

dim: usize

Original dimension (before padding)

delta: f32

vl: f32

f_add: f32

f_rescale: f32

f_error: f32

residual_norm: f32

f_add_ex: f32

f_rescale_ex: f32

Implementations

impl QuantizedVector

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

Unpack binary code for computation

pub fn unpack_ex_code(&self) -> Vec<u16>

Unpack extended code for computation

pub fn ensure_unpacked_cache(&mut self)

Ensure unpacked caches are populated (No-op in memory-optimized version)

pub fn heap_size(&self) -> usize

Calculate heap memory usage in bytes

Trait Implementations

impl Clone for QuantizedVector

fn clone(&self) -> QuantizedVector

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QuantizedVector

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for QuantizedVector

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for QuantizedVector

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.