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Add ANN search support for vec0 virtual table (#273)

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Add approximate nearest neighbor infrastructure to vec0: shared distance
dispatch (vec0_distance_full), flat index type with parser, NEON-optimized
cosine/Hamming for float32/int8, amalgamation script, and benchmark suite
(benchmarks-ann/) with ground-truth generation and profiling tools. Remove
unused vec_npy_each/vec_static_blobs code, fix missing stdint.h include.
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Alex Garcia 2026-03-31 01:03:32 -07:00 • committed by GitHub
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@ -59,5 +59,4 @@ The current compile-time flags are:
- `SQLITE_VEC_ENABLE_AVX`, enables AVX CPU instructions for some vector search operations
- `SQLITE_VEC_ENABLE_NEON`, enables NEON CPU instructions for some vector search operations
- `SQLITE_VEC_OMIT_FS`, removes some obsure SQL functions and features that use the filesystem, meant for some WASM builds where there's no available filesystem
- `SQLITE_VEC_STATIC`, meant for statically linking `sqlite-vec`