Struct IndexComposition

pub struct IndexComposition<C, const N: usize> { /* private fields */ }

An adapter which allows evaluating a composition over a larger query by indexing into it. See index_composition for a factory method.

Implementations

impl<C, const N: usize> IndexComposition<C, N>

pub fn new( n_vars: usize, indices: [usize; N], composition: C, ) -> Result<Self, Error>

Trait Implementations

impl<C: Clone, const N: usize> Clone for IndexComposition<C, N>

fn clone(&self) -> IndexComposition<C, N>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<P: PackedField, C: CompositionPolyOS<P>, const N: usize> CompositionPolyOS<P> for IndexComposition<C, N>

fn n_vars(&self) -> usize

The number of variables.

fn degree(&self) -> usize

Total degree of the polynomial.

fn evaluate(&self, query: &[P]) -> Result<P, Error>

Evaluates the polynomial using packed values, where each packed value may contain multiple scalar values. The evaluation follows SIMD semantics, meaning that operations are performed element-wise across corresponding scalar values in the packed values.

fn binary_tower_level(&self) -> usize

Returns the maximum binary tower level of all constants in the arithmetic expression.

fn batch_evaluate( &self, batch_query: &[&[P]], evals: &mut [P], ) -> Result<(), Error>

Batch evaluation that admits non-strided argument layout. batch_query is a slice of slice references of equal length, which furthermore should equal the length of evals parameter.

impl<C: Debug, const N: usize> Debug for IndexComposition<C, N>

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

Formats the value using the given formatter.