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Package lombokvector
Short Description Vector math with bit-identical results across PHP, Rust, TypeScript, Python and Go: dot product, cosine similarity, L2 distance, normalization, batch ranking. Zero dependencies.
License Apache-2.0
Homepage https://github.com/codinglombok/LombokVector
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Informations about the package lombokvector
LombokVector
Vector math that gives the same bits in Rust, TypeScript, Python, Go, PHP, and C: dot product, cosine similarity, Euclidean distance, normalization, batch ranking. Zero runtime dependencies; the Rust crate is
no_stdand uses AVX2, NEON, or WASM SIMD without changing results.
Part of the Lombok Ecosystem.
Mengapa library ini? (Why this library?)
- Bit-identical across languages. Floating-point sums depend on their order. LombokVector fixes the order (8 lanes, separate rounding, no fused multiply-add; SPEC section 2), so a score computed in a Python batch job, a Go service, and a TypeScript browser app is exactly the same number. All ports check 223 shared cases bit for bit in CI.
- SIMD that does not change answers. The Rust AVX2 (x86), NEON (aarch64), and simd128 (wasm32) kernels follow the same order as the scalar code, and a test compares them on every build. Measured: AVX2 dot product of 768 binary32 values in about 56 ns versus 72 ns for the scalar kernel on one x86_64 machine (the scalar code is already auto-vectorized), so expect a modest speed-up rather than a large one.
- Explicit failure modes. Empty input, length mismatch, zero magnitude, and overflow or non-finite input (
NON_FINITE) are errors with the same code in every language, instead of silent NaN. - Runs small. Rust
no_stdwithout an allocator (embedded), with a correctly rounded software square root, plus a C API. Pure TypeScript, Python, Go, and PHP with no dependencies.
Installation
| Language | Package | Status |
|---|---|---|
| Rust | lombokvector (crates.io) |
not yet published |
| TypeScript / JavaScript | lombokvector (npm) |
not yet published |
| Python | lombokvector (PyPI) |
not yet published |
| Go | github.com/codinglombok/lombokvector/go |
tag go/v0.1.0 on release |
| PHP | codinglombok/lombokvector (Packagist) |
needs a split repository first |
| C | c-headers/lombokvector.h + library built from rust/ |
build from source |
Quick start
Rust
TypeScript
Python
Go
PHP
C
Build the library with cargo rustc --release --features ffi --crate-type cdylib in rust/; see c-headers/examples/check.c.
Ports
| Rust | TypeScript | Python | Go | PHP | C | |
|---|---|---|---|---|---|---|
| binary64 | YES | YES | YES | YES | YES | dot, l2, cosine |
| binary32 | YES | – | – | YES | – | dot, l2, cosine, norm, normalize |
| batch + matrix | YES | YES | YES | YES | YES | – |
| SIMD | AVX2, NEON, simd128 | – | – | – | – | via Rust |
| shared vectors | 223/223 | 113/113 | 113/113 | 223/223 | 113/113 | smoke test |
Known limitations
No approximate-nearest-neighbour index, no quantization, no distances beyond L2/dot/cosine. Very large elements overflow the sum of squares (NON_FINITE) because there is no rescaling. Only Rust and Go offer binary32. Details: docs/full_summary_project_LombokVector_v0.1.0.md.
Versioning
The published version ladder starts at 0.1.0 (this release) and proceeds
in staged steps: v0.1.0 -> v0.2.0 -> v0.3.0 -> ... . 0.1.0 consolidates
the two earlier unpublished internal drafts (2026-09-22 and 2026-10-02), so
no published version number was skipped. Registry versions are immutable:
fixes always ship as new versions and tags are never moved. The full staged
release procedure — per-registry workflows, approval gates, verification,
version bumps — is in docs/RELEASE_RUNBOOK.md.
Development
License
Apache-2.0. See LICENSE.
