Enum darkfi::zk::halo2::Assigned

pub enum Assigned<F> {
    Zero,
    Trivial(F),
    Rational(F, F),
}
Expand description

A value assigned to a cell within a circuit.

Stored as a fraction, so the backend can use batch inversion.

A denominator of zero maps to an assigned value of zero.

Variants§

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Zero

The field element zero.

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Trivial(F)

A value that does not require inversion to evaluate.

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Rational(F, F)

A value stored as a fraction to enable batch inversion.

Implementations§

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impl<F> Assigned<F>
where F: Field,

pub fn numerator(&self) -> F

Returns the numerator.

pub fn denominator(&self) -> Option<F>

Returns the denominator, if non-trivial.

pub fn is_zero_vartime(&self) -> bool

Returns true iff this element is zero.

pub fn double(&self) -> Assigned<F>

Doubles this element.

pub fn square(&self) -> Assigned<F>

Squares this element.

pub fn cube(&self) -> Assigned<F>

Cubes this element.

pub fn invert(&self) -> Assigned<F>

Inverts this assigned value (taking the inverse of zero to be zero).

pub fn evaluate(self) -> F

Evaluates this assigned value directly, performing an unbatched inversion if necessary.

If the denominator is zero, this returns zero.

Trait Implementations§

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impl<F> Add<&Assigned<F>> for &Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the + operator.
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fn add(self, rhs: &Assigned<F>) -> Assigned<F>

Performs the + operation. Read more
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impl<F> Add<&Assigned<F>> for Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the + operator.
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fn add(self, rhs: &Assigned<F>) -> Assigned<F>

Performs the + operation. Read more
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impl<F> Add<Assigned<F>> for &Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the + operator.
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fn add(self, rhs: Assigned<F>) -> Assigned<F>

Performs the + operation. Read more
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impl<F> Add<F> for &Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the + operator.
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fn add(self, rhs: F) -> Assigned<F>

Performs the + operation. Read more
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impl<F> Add<F> for Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the + operator.
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fn add(self, rhs: F) -> Assigned<F>

Performs the + operation. Read more
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impl<F> Add for Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the + operator.
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fn add(self, rhs: Assigned<F>) -> Assigned<F>

Performs the + operation. Read more
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impl<F> AddAssign<&Assigned<F>> for Assigned<F>
where F: Field,

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fn add_assign(&mut self, rhs: &Assigned<F>)

Performs the += operation. Read more
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impl<F> AddAssign for Assigned<F>
where F: Field,

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fn add_assign(&mut self, rhs: Assigned<F>)

Performs the += operation. Read more
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impl<F> Clone for Assigned<F>
where F: Clone,

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fn clone(&self) -> Assigned<F>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<F> Debug for Assigned<F>
where F: Debug,

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

Formats the value using the given formatter. Read more
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impl<F> From<&Assigned<F>> for Assigned<F>
where F: Field,

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fn from(val: &Assigned<F>) -> Assigned<F>

Converts to this type from the input type.
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impl<F> From<&F> for Assigned<F>
where F: Field,

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fn from(numerator: &F) -> Assigned<F>

Converts to this type from the input type.
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impl<F> From<(F, F)> for Assigned<F>
where F: Field,

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fn from(_: (F, F)) -> Assigned<F>

Converts to this type from the input type.
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impl<F> From<F> for Assigned<F>
where F: Field,

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fn from(numerator: F) -> Assigned<F>

Converts to this type from the input type.
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impl<F> Mul<&Assigned<F>> for Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the * operator.
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fn mul(self, rhs: &Assigned<F>) -> Assigned<F>

Performs the * operation. Read more
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impl<F> Mul<F> for &Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the * operator.
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fn mul(self, rhs: F) -> Assigned<F>

Performs the * operation. Read more
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impl<F> Mul<F> for Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the * operator.
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fn mul(self, rhs: F) -> Assigned<F>

Performs the * operation. Read more
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impl<F> Mul for Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the * operator.
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fn mul(self, rhs: Assigned<F>) -> Assigned<F>

Performs the * operation. Read more
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impl<F> MulAssign<&Assigned<F>> for Assigned<F>
where F: Field,

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fn mul_assign(&mut self, rhs: &Assigned<F>)

Performs the *= operation. Read more
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impl<F> MulAssign for Assigned<F>
where F: Field,

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fn mul_assign(&mut self, rhs: Assigned<F>)

Performs the *= operation. Read more
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impl<F> Neg for &Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the - operator.
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fn neg(self) -> <&Assigned<F> as Neg>::Output

Performs the unary - operation. Read more
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impl<F> Neg for Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the - operator.
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fn neg(self) -> <Assigned<F> as Neg>::Output

Performs the unary - operation. Read more
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impl<F> PartialEq for Assigned<F>
where F: Field,

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fn eq(&self, other: &Assigned<F>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<F> Sub<&Assigned<F>> for &Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the - operator.
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fn sub(self, rhs: &Assigned<F>) -> Assigned<F>

Performs the - operation. Read more
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impl<F> Sub<&Assigned<F>> for Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the - operator.
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fn sub(self, rhs: &Assigned<F>) -> Assigned<F>

Performs the - operation. Read more
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impl<F> Sub<Assigned<F>> for &Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the - operator.
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fn sub(self, rhs: Assigned<F>) -> Assigned<F>

Performs the - operation. Read more
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impl<F> Sub<F> for &Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the - operator.
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fn sub(self, rhs: F) -> Assigned<F>

Performs the - operation. Read more
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impl<F> Sub<F> for Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the - operator.
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fn sub(self, rhs: F) -> Assigned<F>

Performs the - operation. Read more
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impl<F> Sub for Assigned<F>
where F: Field,

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type Output = Assigned<F>

The resulting type after applying the - operator.
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fn sub(self, rhs: Assigned<F>) -> Assigned<F>

Performs the - operation. Read more
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impl<F> SubAssign<&Assigned<F>> for Assigned<F>
where F: Field,

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fn sub_assign(&mut self, rhs: &Assigned<F>)

Performs the -= operation. Read more
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impl<F> SubAssign for Assigned<F>
where F: Field,

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fn sub_assign(&mut self, rhs: Assigned<F>)

Performs the -= operation. Read more
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impl<F> Copy for Assigned<F>
where F: Copy,

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impl<F> Eq for Assigned<F>
where F: Field,

Auto Trait Implementations§

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impl<F> Freeze for Assigned<F>
where F: Freeze,

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impl<F> RefUnwindSafe for Assigned<F>
where F: RefUnwindSafe,

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impl<F> Send for Assigned<F>
where F: Send,

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impl<F> Sync for Assigned<F>
where F: Sync,

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impl<F> Unpin for Assigned<F>
where F: Unpin,

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impl<F> UnwindSafe for Assigned<F>
where F: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.
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fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata ) -> <T as Pointee>::Metadata

Converts some archived metadata to the pointer metadata for itself.
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Checks if this value is equivalent to the given key. Read more
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Compare self to key and return true if they are equal.
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