Struct AttrQuant 

pub struct AttrQuant {
    pub o: f64,
    pub s: f64,
}

Per-numeric-property quantization affine: value = o + q * s, where o is the column minimum (the dequantization offset) and s the requested ground precision (the step). Reconstruction is lossy to ≤ s/2; the reader applies the identical math (tile.ts).

Fields

o: f64

s: f64

Implementations

impl AttrQuant

pub fn from_json(s: &str) -> Option<AttrQuant>

Parse the affine from its STT_QUANT_ATTR_META_KEY JSON value.

pub fn value(&self, q: i64) -> f64

Reconstruct the original value from a quantized index.

Trait Implementations

impl Clone for AttrQuant

fn clone(&self) -> AttrQuant

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for AttrQuant

impl Debug for AttrQuant

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

Formats the value using the given formatter.

impl PartialEq for AttrQuant

fn eq(&self, other: &AttrQuant) -> 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 StructuralPartialEq for AttrQuant