Infrastructure update: MSM variants + compact polynomial types#493
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srinathsetty wants to merge 2 commits intomainfrom
Open
Infrastructure update: MSM variants + compact polynomial types#493srinathsetty wants to merge 2 commits intomainfrom
srinathsetty wants to merge 2 commits intomainfrom
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Stores polynomial evaluations as bool/u8/u16/u32/u64/i64 and defers conversion to field elements until bind. First bind promotes the compact representation to field elements in one pass using diff_to_field. Also enables the bn256-table feature for fast small-value Fr conversion: values below 65536 use a precomputed lookup table instead of Montgomery multiplication.
Add signed MSM (msm_signed, msm_signed_windowed) for i128 scalars, splitting into positive/negative u64 parts with optimal small-scalar MSM. Add windowed Pippenger with XYZZ bucket coordinates and signed digit recoding for 33-64 bit scalars. Add batch sparse binary commit (commit_sparse_binary_batch) with shared- index deduplication: when multiple polynomials in a group share the same hot index at a position, the SRS point is accumulated once into a shared sum rather than once per polynomial. Add batch_add_address_grouped for chunked polynomials where the SRS index has address locality, using sequential SRS scans with per-address bitmasks for cache-friendly access. New CommitmentEngineTrait methods: commit_signed, commit_sparse, commit_sparse_binary_batch, with implementations for HyperKZG and Pedersen.
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