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Implement Sum and Product for Expression #209

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merged 3 commits into from
Sep 27, 2023

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@pnyda pnyda commented Sep 18, 2023

Fixes #205
If there was a reason not to make Expression Eq let me know. I did it for tests. I can remove it.

@pnyda pnyda changed the title Issue205 Implement Sum and Product for Expression Sep 18, 2023
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Please impl Sum & Prod with fold internally.

halo2_proofs/src/plonk/circuit.rs Outdated Show resolved Hide resolved
halo2_proofs/src/plonk/circuit.rs Outdated Show resolved Hide resolved
@pnyda pnyda requested a review from CPerezz September 19, 2023 08:26
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LGTM!

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Sorry, I left my review pending to be sent.. Apologies for the delay @chokermaxx

impl<F: Field> Product<Self> for Expression<F> {
fn product<I: Iterator<Item = Self>>(iter: I) -> Self {
iter.reduce(|acc, x| acc * x)
.unwrap_or(Expression::Constant(F::ONE))
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I'm not sure that even 1 being the muluiplicative identity, multiplying an iterator that is empty should return 1 instead of 0. Which is null, which I think is what corresponds more to what would you expect.

WDYT @han0110 @davidnevadoc ??

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Returning 1 makes more sense to me, since it's multiplicative identity. Also most field implementations return 1 on empty product, for instance https://github.com/zcash/pasta_curves/blob/a586b8c2db5ff9276cc1c2b4260f99ae68eeff02/src/fields/fq.rs#L176-L186.

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Fair point! Let's get it merged then!

Thanks a lot for the reference!

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Thanks for the PR!!

@CPerezz CPerezz merged commit 0c3e3b5 into privacy-scaling-explorations:main Sep 27, 2023
12 checks passed
Velaciela pushed a commit to scroll-tech/halo2 that referenced this pull request Oct 13, 2023
…s#209)

* Make it Eq to make it easier for tests

* Implement Sum and Product for Expression

* Make it readable
kunxian-xia added a commit to scroll-tech/halo2 that referenced this pull request Jan 12, 2024
* feat: call synthesize in `MockProver` multiple times to behave same as real prover

* modify previous commit

* Expose mod `permutation` and re-export `permutation::keygen::Assembly` (privacy-scaling-explorations#149)

* feat: expose mod ule `permutation` and re-export `permutation::keygen::Assembly`

* feat: derive `lone` for `permutation::keygen::Assembly`

* feat: bump MSRV for `inferno`

* change: Migrate workspace to pasta_curves-0.5 (privacy-scaling-explorations#157)

* change: Migrate workspace to pasta_curves-0.5

This ports the majority of the workspace to the `pasta_curves-0.5.0`
leaving some tricky edge-cases that we need to handle carefully.

Resolves: privacy-scaling-explorations#132

* fix: Complete latest trait bounds to compile halo2proofs

* change: Migrate examples & benches to pasta 0.5

* change: Migrate halo2_gadgets to pasta-0.5

* change: Update gadgets outdated code with latest upstream

* fix: Sha3 gadget circuit

* fix: doc tests

* chore: Update merged main

* fix: Apply review suggestions

* fix previous commit

* Extend Circuit trait to take parameters in config (privacy-scaling-explorations#168)

* Extend Circuit trait to take parameters in config

The Circuit trait is extended with the following:
```
pub trait Circuit<F: Field> {
    /// [...]
    type Params: Default;

    fn params(&self) -> Self::Params {
        Self::Params::default()
    }

    fn configure_with_params(meta: &mut ConstraintSystem<F>, params: &Self::Params) -> Self::Config {
        Self::configure(meta)
    }

    fn configure(meta: &mut ConstraintSystem<F>) -> Self::Config;
}
```

This allows runtime parametrization of the circuit configuration.  The extension to the Circuit trait has been designed to minimize the breaking change: existing circuits only need to define the associated `type Params`.

Unfortunately "Associated type defaults" are unstable in Rust, otherwise this would be a non-breaking change.  See rust-lang/rust#29661

* Implement circuit params under feature flag

* Don't overwrite configure method

* Fix doc test

* Allow halo2 constraint names to have non static names (privacy-scaling-explorations#156)

* static ref to String type in Gates, Constraints, VirtualCell, Argument

* 'lookup'.to_string()

* return &str for gate name and constriant_name, also run fmt

* Update halo2_gadgets/Cargo.toml

Co-authored-by: Han <[email protected]>

* upgrade rust-toochain

---------

Co-authored-by: Carlos Pérez <[email protected]>
Co-authored-by: Han <[email protected]>

* Improve halo2 query calls (privacy-scaling-explorations#154)

* return expression from cell

* add example

* selector

* recurse Expression to fill in index

* minimized changes from the original

* backword compatible meta.query_X & challange.expr()

* cargo fmt

* fixed lookup to pass all tests

* Update comments

Co-authored-by: Brecht Devos <[email protected]>

* Update comments

Co-authored-by: Brecht Devos <[email protected]>

* Update comments

Co-authored-by: Brecht Devos <[email protected]>

* Update comments

Co-authored-by: Brecht Devos <[email protected]>

* Update comments

Co-authored-by: Brecht Devos <[email protected]>

* Update comments

Co-authored-by: Brecht Devos <[email protected]>

* update

Co-authored-by: Brecht Devos <[email protected]>

* add primitives.rs back

* remove example2

* backward compatible meta.query_X & Column.cur(), next(), prev(), at(usize)

* impl Debug & make side effects only when query.index.is_none()

* change impl Debug for Expression instead & revert test in plonk_api

* upgrade rust-toolchain

* Update halo2_proofs/src/plonk/circuit.rs

Co-authored-by: Han <[email protected]>

* Update halo2_proofs/src/plonk/circuit.rs

Co-authored-by: Han <[email protected]>

* ran clippy

* Update halo2_proofs/src/plonk/circuit.rs

Co-authored-by: Han <[email protected]>

---------

Co-authored-by: Brecht Devos <[email protected]>
Co-authored-by: Han <[email protected]>

* Implement Clone trait for Hash, Absorbing, and Sponge structs (privacy-scaling-explorations#171)

* fix: Fix serialization for VerifyingKey (privacy-scaling-explorations#178)

Now the value returned when the number of selectors is a multiple of 8
is correct.

Resolves: privacy-scaling-explorations#175

* Add more getters to expose internal fields

* add a constructor (privacy-scaling-explorations#164)

* add a constructor

* add more comment

* fix as review

* remove clone

* remove

* no need to use new variable

* change comment

* fix clippy

* rename to from_parts

* remove n declaration

* feat: send sync region (privacy-scaling-explorations#180)

* feat: send / sync region

* Update layout.rs

* update

* lol

* debug

* Update keygen.rs

* Update keygen.rs

* Update keygen.rs

* Update keygen.rs

* thread-safe-region feature flag

* cleanup

* patch dev-graph

* patch non-determinism in mapping creation

* reduce mem usage for vk and pk

* mock proving examples

* swap for hashmap for insertion speed

* reduce update overhead

* replace BTree with Vec

* add benchmarks

* make the benchmarks massive

* patch clippy

* simplify lifetimes

* patch benches

* Update halo2_proofs/src/plonk/permutation/keygen.rs

Co-authored-by: Han <[email protected]>

* Update halo2_proofs/examples/vector-mul.rs

Co-authored-by: Han <[email protected]>

* rm benches

* order once

* patch lints

---------

Co-authored-by: Han <[email protected]>

* fix previous commit

* Fix `parallelize` workload imbalance (privacy-scaling-explorations#186)

* fix parallelize workload imbalance

* remove the need of unsafe

* Updates halo2_curves dependency to released package (privacy-scaling-explorations#190)

THe package release ressets the version from those inherited by the legacy
halo2curves repo's fork history.

The upstream diff is:
https://github.com/privacy-scaling-explorations/halo2curves/compare/9f5c50810bbefe779ee5cf1d852b2fe85dc35d5e..9a7f726fa74c8765bc7cdab11519cf285d169ecf

* fix: explicitly define mds diff type (privacy-scaling-explorations#196)

* fix: explicitly define mds diff type

* rm paren

* feat: expose `transcript_repr` of `VerifyingKey` and reduce the trait constraint (privacy-scaling-explorations#200)

* implement native shuffle argument and api

fix: remove nonsense comment

strictly check shuffle rows

address doc typos

move compression into product commitment

typo

add shuffle errors for `verify_at_rows_par`

dedup expression evaluation

cargo fmt

fix fields in sanity-checks feature

* feat: public cells to allow for implementations of custom `Layouter`  (privacy-scaling-explorations#192)

* feat: public cells

* Update mds.rs

* Update mds.rs

* Update single_pass.rs

Co-authored-by: Han <[email protected]>

* bump toolchain to resolve errors

* fix clippy errors for CI run

* rustfmt post clippy

* plz let it be the last lint

* patch clippy lints in gadgets

* clippy lints for sha256 bench

* patch halo2proof benches

* Update assigned.rs

* Update halo2_gadgets/src/poseidon/primitives/mds.rs

Co-authored-by: Han <[email protected]>

* Update halo2_gadgets/src/poseidon/primitives/mds.rs

Co-authored-by: Han <[email protected]>

---------

Co-authored-by: Han <[email protected]>

* Synchronize with upstream (privacy-scaling-explorations#199)

* refactor: add default impl for `SyncDeps` for backward compatability

* feat: pick changes from zcash#728 and changes of flag `test-dev-graph`

* feat: pick changes from zcash#622

* feat: pick changes about mod `circuit` and mod `dev`

* feat: pick rest changes of `halo2_proofs`

* fix: when `--no-default-features`

* ci: sync from upstream, and deduplicate jobs when
push to `main`, and remove always failing job `codecov`.

* fix: make `commit_zk` runnable when `--no-default-features`

* chore: Update rust-toolchain to 1.66 for testing  (privacy-scaling-explorations#208)

* chore: Update rust-toolchain to 1.66 for testing

Note that tests will not compile due to the silent MSRV bump in
`blake2b_simd`.

Hence, we need to use `1.66` as toolchain.

Resolves: privacy-scaling-explorations#207

* change: UIpdate MSRVs in Cargo.toml

* fix: clippy (privacy-scaling-explorations#203)

* fix: clippy

* fmt

* fix: Final clippy complains & adjustments

---------

Co-authored-by: CPerezz <[email protected]>

* Implement Sum and Product for Expression (privacy-scaling-explorations#209)

* Make it Eq to make it easier for tests

* Implement Sum and Product for Expression

* Make it readable

* chore: update poseidon dependency

* fix: compiling bug with feautes=parallel_syn

* feat(MockProver): replace errors by asserts(privacy-scaling-explorations#150)

* boundary offset lost when resolving conflict

* disable multiphase prover

* Sync halo2 lib 0.4.0 merging (#81)

* Use thread pool for assign_regions (#57)

* feat: use rayon threadpool

* feat: add UT for many subregions

* refact: move common struct out to module level

* refact: reuse common configure code

* fix ci errors

---------

Co-authored-by: kunxian xia <[email protected]>

* Move `env_logger` dependency to dev-depdendencies (only for test). (#69)

* sync ff/group 0.13

* fix clippy

* fix clippy

* fmg

* [FEAT] Upgrading table16 for SHA256 (#73)

* upgrade sha256

* fix clippy

* Bus auto (#72)

* bus: expose global offset of regions

* bus-auto: add query_advice and query_fixed function in witness generation

* bus-auto: fix clippy

---------

Co-authored-by: Aurélien Nicolas <[email protected]>

* fix-tob-scroll-21 (#59)

* fix-tob-scroll-21

* expose param field for re-randomization

* enable accessing for table16 (#75)

* chore: update poseidon link

* merge sha256 gadget changes

* Fix the CI errors (#78)

* cargo fmt

* fix clippy error

* Feat: switch to logup scheme for lookup argument  (#71)

* Multi-input mv-lookup. (#49)

* Add mv_lookup.rs

* mv_lookup::prover, mv_lookup::verifier

* Replace lookup with mv_lookup

* replace halo2 with mv lookup

Co-authored-by: ying tong <[email protected]>

* cleanups

Co-authored-by: ying tong <[email protected]>

* ConstraintSystem: setup lookup_tracker

Co-authored-by: Andrija <[email protected]>

* mv_lookup::hybrid_prover

Co-authored-by: Andrija <[email protected]>

* WIP

* mv_multi_lookup: enable lookup caching

Co-authored-by: therealyingtong <[email protected]>

* Rename hybrid_lookup -> lookup

* Chunk lookups using user-provided minimum degree

Co-authored-by: Andrija <[email protected]>

* mv_lookup bench

Co-authored-by: Andrija <[email protected]>

* Introduce counter feature for FFTs and MSMs

Co-authored-by: Andrija <[email protected]>

* Fix off-by-one errors in chunk_lookup

Co-authored-by: Andrija <[email protected]>

* bench wip

* time evaluate_h

* KZG

* more efficient batch inversion

* extended lookup example

* Finalize mv lookup

Author: therealyingtong <[email protected]>

* Remove main/

* Fix according to the comments

* replace scan with parallel grand sum computation

* Revert Cargo.lock

* mv lookup Argument name

* parallel batch invert

---------

Co-authored-by: Andrija <[email protected]>
Co-authored-by: ying tong <[email protected]>
Co-authored-by: therealyingtong <[email protected]>

* fmt

* fix unit test

* fix clippy errors

* add todo in mv_lookup's prover

* fmt and clippy

* fix clippy

* add detailed running time of steps in logup's prover

* fmt

* add more log hooks

* more running time logs

* use par invert

* use sorted-vector to store how many times a table element occurs in input

* par the process to get inputs_inv_sum

* use par

* fix par

* add feature to skip inv sums

* add new feature flag

* fix clippy error

---------

Co-authored-by: Sphere L <[email protected]>
Co-authored-by: Andrija <[email protected]>
Co-authored-by: ying tong <[email protected]>
Co-authored-by: therealyingtong <[email protected]>

* fix some simple building errs

* upgrade pathfinder_simd to newer version as it can't compile on mac m1 pro

* resolve merge conflict

* fmt

* clippy

* more clippy fix

* more lint fix

* fmt

* minor syntax fix

* fix ipa multiopen test failure

* fix clippy warning

* fmt

* fix par scan of log_inv diff

* remove uncessary clone

---------

Co-authored-by: alannotnerd <[email protected]>
Co-authored-by: kunxian xia <[email protected]>
Co-authored-by: Steven <[email protected]>
Co-authored-by: Carlos Pérez <[email protected]>
Co-authored-by: zhenfei <[email protected]>
Co-authored-by: Ho <[email protected]>
Co-authored-by: naure <[email protected]>
Co-authored-by: Aurélien Nicolas <[email protected]>
Co-authored-by: Sphere L <[email protected]>
Co-authored-by: Andrija <[email protected]>
Co-authored-by: ying tong <[email protected]>
Co-authored-by: therealyingtong <[email protected]>

---------

Co-authored-by: han0110 <[email protected]>
Co-authored-by: Velaciela <[email protected]>
Co-authored-by: Carlos Pérez <[email protected]>
Co-authored-by: Eduard S <[email protected]>
Co-authored-by: CeciliaZ030 <[email protected]>
Co-authored-by: Brecht Devos <[email protected]>
Co-authored-by: Enrico Bottazzi <[email protected]>
Co-authored-by: Ethan-000 <[email protected]>
Co-authored-by: dante <[email protected]>
Co-authored-by: Mamy Ratsimbazafy <[email protected]>
Co-authored-by: François Garillot <[email protected]>
Co-authored-by: kilic <[email protected]>
Co-authored-by: Thor <[email protected]>
Co-authored-by: CPerezz <[email protected]>
Co-authored-by: chokermaxx <[email protected]>
Co-authored-by: Zhang Zhuo <[email protected]>
Co-authored-by: alannotnerd <[email protected]>
Co-authored-by: kunxian xia <[email protected]>
Co-authored-by: Steven <[email protected]>
Co-authored-by: Ho <[email protected]>
Co-authored-by: naure <[email protected]>
Co-authored-by: Aurélien Nicolas <[email protected]>
Co-authored-by: Sphere L <[email protected]>
Co-authored-by: Andrija <[email protected]>
Co-authored-by: ying tong <[email protected]>
Co-authored-by: therealyingtong <[email protected]>
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Implement Sum & Prod trait impls for Expression
3 participants