Struct HornerEvaluation

pub struct HornerEvaluation {
    pub num_coefficients: usize,
}

Evaluate a polynomial in a point using the Horner method.

HornerEvaluation takes an array of coefficients (representing a polynomial) and a scalar (representing an indeterminate) and computes the value of the polynomial in that point. It can be used for univariate batching, whereby the object is to compute a random linear sum of a given set of points, and the weights are given by the powers of one challenge.

Behavior

BEFORE: _ *coefficients [indeterminate: XFieldElement]
AFTER:  _ [evaluation: XFieldElement]

Preconditions

None.

Postconditions

None.

Fields

num_coefficients: usize

Implementations

impl HornerEvaluation

pub fn new(num_coefficients: usize) -> Self

Trait Implementations

impl BasicSnippet for HornerEvaluation

fn inputs(&self) -> Vec<(DataType, String)>

fn outputs(&self) -> Vec<(DataType, String)>

fn entrypoint(&self) -> String

fn code(&self, _: &mut Library) -> Vec<LabelledInstruction>

fn sign_offs(&self) -> HashMap<Reviewer, SignOffFingerprint>

Contains an entry for every sign off.

fn annotated_code(&self, library: &mut Library) -> Vec<LabelledInstruction>

fn link_for_isolated_run(&self) -> Vec<LabelledInstruction>

fn init_stack_for_isolated_run(&self) -> Vec<BFieldElement>

Initial stack on program start, when the snippet runs in isolation.

fn stack_diff(&self) -> isize

impl Clone for HornerEvaluation

fn clone(&self) -> HornerEvaluation

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for HornerEvaluation

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

Formats the value using the given formatter.

impl Hash for HornerEvaluation

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for HornerEvaluation

fn eq(&self, other: &HornerEvaluation) -> 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 Copy for HornerEvaluation

impl Eq for HornerEvaluation

impl StructuralPartialEq for HornerEvaluation