Struct QuantHeader 

#[repr(C)]
pub struct QuantHeader {
    pub quant_mode: u16,
    pub dim: u16,
    pub global_scale: f32,
    pub residual_norm: f32,
    pub dot_quantized: f32,
    pub outlier_bitmask: u64,
    pub reserved: [u8; 8],
}

32-byte interleaved header preceding the packed bit array.

#[repr(C)] for stable layout; serializable via raw bytes.

Fields

quant_mode: u16

QuantMode discriminant.

dim: u16

global_scale: f32

BitNet absmean / SQ8 scale / RaBitQ rotation magnitude.

residual_norm: f32

RaBitQ ‖v−c‖ / TurboQuant ‖r‖ / BBQ centroid distance.

dot_quantized: f32

RaBitQ ⟨v, q(v)⟩ / BBQ corrective / TurboQuant QJL bias.

outlier_bitmask: u64

Sparse outlier index — branchless gather via popcnt. Supports up to 64 outlier dimensions per vector.

reserved: [u8; 8]

QJL projection seed / OSAQ Hessian coeff / future use.

Trait Implementations

impl Clone for QuantHeader

fn clone(&self) -> QuantHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QuantHeader

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

Formats the value using the given formatter.

impl Copy for QuantHeader