Enum LookupWitnessSource 

pub enum LookupWitnessSource {
    Column {
        column_index: usize,
    },
    Affine {
        terms: Vec<(usize, i64)>,
        constant_offset_bits: u32,
    },
}

Describes how a lookup witness column was derived from the trace.

Carried in LookupGroupMeta so the verifier can reconstruct the parent evaluation without re-receiving the lookup specs.

Variants

Column

Standard column lookup: parent eval = up_evals[column_index].

Fields

column_index: usize

Original trace column index.

Affine

Affine-combination lookup: parent eval = Σ coeff·up_evals[col] + offset. Currently only needed for BitPoly

Fields

terms: Vec<(usize, i64)>

(column_index, coefficient) pairs.

constant_offset_bits: u32

Constant bit-polynomial offset encoded as a u32 bit pattern.

Trait Implementations

impl Clone for LookupWitnessSource

fn clone(&self) -> LookupWitnessSource

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LookupWitnessSource

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

Formats the value using the given formatter.

impl PartialEq for LookupWitnessSource

fn eq(&self, other: &LookupWitnessSource) -> 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 Eq for LookupWitnessSource

impl StructuralPartialEq for LookupWitnessSource