DigitComponents

frontend::components::digits

Struct DigitComponents 

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pub struct DigitComponents;
Expand description

Digits-related circuit components

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impl DigitComponents

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pub fn unsigned_recomposition<F: Field>( builder_ref: &mut CircuitBuilder<F>, mles: &[&NodeRef<F>], base: u64, ) -> NodeRef<F>

Digital recomposition of an unsigned integer, i.e. deriving the number from its digits. Each of the Nodes in mles specifies the digits for a different “decimal place”. Most significant digit comes first.

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pub fn complementary_recomp_check<F: Field>( builder_ref: &mut CircuitBuilder<F>, values: &NodeRef<F>, bits: &NodeRef<F>, unsigned_recomps: &NodeRef<F>, base: u64, num_digits: usize, ) -> NodeRef<F>

Checks that the complementary decomposition of a signed integer. To be used in conjunction with Self::unsigned_recomposition. See crate::digits::complementary_decomposition and Notion. Add self.sector to the circuit as an output layer to enforce this constraint. Create a new ComplementaryDecompChecker. values are the original values. bits are the bits of the complementary decomposition. unsigned_recomps are the unsigned recompositions.

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pub fn bits_are_binary<F: Field>( builder_ref: &mut CircuitBuilder<F>, values_node: &NodeRef<F>, ) -> NodeRef<F>

Ensures that each bit is either 0 or 1. Add self.sector to the circuit as an output layer to enforce this constraint.

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pub fn digits_concatenator<F: Field>( builder_ref: &mut CircuitBuilder<F>, mles: &[&NodeRef<F>], ) -> NodeRef<F>

A component that concatenates all the separate digit MLEs (there is one for each digital place) into a single MLE using a selector tree. (Necessary to interact with logup).

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