Enum Codec 

#[non_exhaustive]
pub enum Codec {
    Int8Quantized,
    Fp16,
    Turbovec2Bit,
    Turbovec3Bit,
    Turbovec4Bit,
}

Codec identifier.

Persisted on every EncodedVector so a reader can pick the correct decoder without ambient state.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Int8Quantized

Per-vector scalar quantisation to u8.

Fp16

IEEE 754 half-precision floats.

Turbovec2Bit

turbovec 2-bit TurboQuant codec, 16x nominal compression.

Turbovec3Bit

turbovec 3-bit TurboQuant codec, 10.6x nominal compression.

Turbovec4Bit

turbovec 4-bit TurboQuant codec, 8x nominal compression.

Implementations

impl Codec

pub fn encoder(self) -> Box<dyn Encoder>

Build the encoder bound to this codec.

pub fn name(self) -> &'static str

Encoder name suitable for logging.

pub fn turbovec_bits(self) -> Option<u8>

Some(bit_width) for the turbovec codecs, None otherwise. Used by the storage layer to dispatch to the SIMD-backed table state.

Trait Implementations

impl Clone for Codec

fn clone(&self) -> Codec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Codec

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Codec

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Codec

fn eq(&self, other: &Codec) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Codec

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Codec

impl Eq for Codec

impl StructuralPartialEq for Codec