lagoon: %int2 comparison + reduction array jets#69
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Mirror the vere change (urbit/vere): Lagoon %int2 cases for gth/gte/lth/lte, cumsum, dot, min/max, argmin/argmax -- native per-lane two's-complement, signed compares via the matching signed C type, scalar reductions boxed per +scalar-to-ray. Reuses the _la_scalar_box helper added by #68 (forward-index argmin/argmax and the rank-correct scalar shape), so int2 and i754 reductions share one boxing helper. Verified jet == %int2 Hoon on a hoon-135 fakezod. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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(Re-opened against
main— the original #67 was auto-closed when its stacked base branch was deleted on #66's merge.)Extends the Lagoon
%int2array jets with the comparison and reduction ops (no GEMM). Runtime counterpart: urbit/vere#1048.gth/gte/lth/lte— per-lane signed (two's-complement) compare → 1/0 ray.cumsum(wrapping sum),dot(sum of products),min/max(two's-complement order),argmin/argmax(forward ravel-index of the first extremum).Native per lane (8…128-bit, no GMP). Scalar reductions reuse the
_la_scalar_boxhelper from #68 (all-1s of input rank, per+scalar-to-ray), so%int2and%i754reductions share one boxing helper — no duplication.Verified jet ==
%int2Hoon on a hoon-135 fakezod across native widths incl. 128-bit, ties, and negatives.🤖 Generated with Claude Code