Struct zkevm_circuits::table::ExpTable

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pub struct ExpTable {
    pub is_step: Column<Fixed>,
    pub identifier: Column<Advice>,
    pub is_last: Column<Advice>,
    pub base_limb: Column<Advice>,
    pub exponent_lo_hi: Column<Advice>,
    pub exponentiation_lo_hi: Column<Advice>,
}
Expand description

Lookup table within the Exponentiation circuit.

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§is_step: Column<Fixed>

Whether the row is the start of a step.

§identifier: Column<Advice>

An identifier for every exponentiation trace, at the moment this is the read-write counter at the time of the lookups done to the exponentiation table.

§is_last: Column<Advice>

Whether this row is the last row in the exponentiation operation’s trace.

§base_limb: Column<Advice>

The integer base of the exponentiation.

§exponent_lo_hi: Column<Advice>

The integer exponent of the exponentiation.

§exponentiation_lo_hi: Column<Advice>

The intermediate result of exponentiation by squaring.

Implementations§

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impl ExpTable

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pub fn construct<F: Field>(meta: &mut ConstraintSystem<F>) -> Self

Construct the Exponentiation table.

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pub fn assignments<F: Field>(exp_event: &ExpEvent) -> Vec<[F; 5]>

Given an exponentiation event and randomness, get assignments to the exponentiation table.

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pub fn load<F: Field>( &self, layouter: &mut impl Layouter<F>, block: &Block<F>, chunk: &Chunk<F> ) -> Result<(), Error>

Assign witness data from a block to the exponentiation table.

Trait Implementations§

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impl Clone for ExpTable

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fn clone(&self) -> ExpTable

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 Debug for ExpTable

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

Formats the value using the given formatter. Read more
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impl<F: Field> LookupTable<F> for ExpTable

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fn columns(&self) -> Vec<Column<Any>>

Returns the list of ALL the table columns following the table order.
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fn annotations(&self) -> Vec<String>

Returns the String annotations associated to each column of the table.
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fn table_exprs(&self, meta: &mut VirtualCells<'_, F>) -> Vec<Expression<F>>

Return the list of expressions used to define the lookup table.
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fn advice_columns(&self) -> Vec<Column<Advice>>

Returns the list of ALL the table advice columns following the table order.
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fn annotate_columns(&self, cs: &mut ConstraintSystem<F>)

Annotates a lookup table by passing annotations for each of it’s columns.
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fn annotate_columns_in_region(&self, region: &mut Region<'_, F>)

Annotates columns of a table embedded within a circuit region.
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impl Copy for ExpTable

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Causes self to use its Display implementation when Debug-formatted.
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Causes self to use its LowerExp implementation when Debug-formatted.
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fn fmt_upper_exp(self) -> FmtUpperExp<Self>
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Causes self to use its UpperExp implementation when Debug-formatted.
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Causes self to use its UpperHex implementation when Debug-formatted.
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