feat: add cosine_distance scalar function#21542
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Add cosine_distance (and list_cosine_distance alias) to compute cosine distance between two numeric arrays. Includes shared vector math primitives in vector_math.rs for reuse by follow-on functions. Part of apache#21536. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
cosine_distance(array1, array2)/list_cosine_distance— computes cosine distance (1 - cosine similarity) between two numeric arraysvector_math.rsprimitives (dot_product_f64,magnitude_f64,convert_to_f64_array) for reuse by follow-on vector functionsPart of #21536 — first in a series of split PRs (replacing #21371).
Test plan
cosine_distance.sltcovering all edge cases including empty arrays, LargeList, integer coercion, alias, return typecargo clippy,cargo fmt,taplo,prettier,cargo machete— all clean🤖 Generated with Claude Code