Struct Lookup

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pub struct Lookup<F: Field> {
    pub kind: Kind,
    pub element_exprs: Vec<Vec<SymbolicExpression<F>>>,
    pub multiplicities_exprs: Vec<SymbolicExpression<F>>,
    pub columns: Vec<usize>,
}

Expand description

A structure that holds the lookup data necessary to generate lookup contexts. It is shared between the prover and the verifier.

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§kind: Kind

Type of lookup: local or global

§element_exprs: Vec<Vec<SymbolicExpression<F>>>

Elements being read (consumed from the table). Each Vec<SymbolicExpression<F>> actually represents a tuple of elements that are bundled together to make one lookup.

§multiplicities_exprs: Vec<SymbolicExpression<F>>

Multiplicities for the elements. Note that Lagrange selectors may not be normalized, and so cannot be used as proper filters in the multiplicities.

§columns: Vec<usize>

The column index in the permutation trace for this lookup’s running sum

Implementations§

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impl<F: Field> Lookup<F>

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pub const fn new( kind: Kind, element_exprs: Vec<Vec<SymbolicExpression<F>>>, multiplicities_exprs: Vec<SymbolicExpression<F>>, columns: Vec<usize>, ) -> Self

Creates a new lookup with the specified column.

§Arguments

elements - Elements from either the main execution trace or a lookup table.
multiplicities - How many times each element should appear
column - The column index in the permutation trace for this lookup

Trait Implementations§

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impl<F: Clone + Field> Clone for Lookup<F>

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

Returns a duplicate 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 + Field> Debug for Lookup<F>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<F> UnwindSafe for Lookup<F>
where F: UnwindSafe + RefUnwindSafe,

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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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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T, U> Into for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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