Enum Coefficient

pub enum Coefficient<R: ?Sized + RingBase> {
    Zero,
    One,
    NegOne,
    Integer(i32),
    Other(R::Element),
}

A coefficient used in a PlaintextCircuit.

Generally speaking, this always represents an element of R (which can be retrieved via Coefficient::to_ring_el()), but special cases are stored separately for a more efficient evaluation.

Variants

Zero

One

NegOne

Integer(i32)

Other(R::Element)

Implementations

impl<R: ?Sized + RingBase> Coefficient<R>

pub fn clone<S: RingStore<Type = R>>(&self, ring: S) -> Self

pub fn eq<S: RingStore<Type = R> + Copy>(&self, other: &Self, ring: S) -> bool

pub fn add_to<S: RingStore<Type = R> + Copy>(&self, x: El<S>, ring: S) -> El<S>

Computes self + x, but avoids a full ring addition if self is zero.

pub fn mul_to<S: RingStore<Type = R> + Copy>(&self, x: El<S>, ring: S) -> El<S>

Computes self * x, but avoids a full ring multiplication if self is stored as an integer.

pub fn is_zero(&self) -> bool

pub fn to_ring_el<S: RingStore<Type = R>>(self, ring: S) -> El<S>

pub fn negate<S: RingStore<Type = R>>(self, ring: S) -> Self

pub fn add<S: RingStore<Type = R> + Copy>(self, other: Self, ring: S) -> Self

pub fn mul<S: RingStore<Type = R> + Copy>(self, other: Self, ring: S) -> Self

pub fn change_ring<S, F>(self, f: F) -> Coefficient<S>

where F: FnMut(R::Element) -> S::Element, S: ?Sized + RingBase,

Preserves integer coefficients, and maps ring elements as specified by the given function.

Trait Implementations

impl<R> Clone for Coefficient<R>

where R: ?Sized + RingBase, R::Element: Clone,

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<R> Copy for Coefficient<R>

where R: ?Sized + RingBase, R::Element: Copy,