lagoon: %int2 comparison + reduction array jets#67
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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. Verified jet == %int2 Hoon on a hoon-135 fakezod. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Runtime counterpart: urbit/vere#1048 |
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Stacked on #66. Extends the Lagoon
%int2array jets with the comparison and reduction ops (no GEMM). Runtime counterpart: urbit/vere (linked in a comment).Adds
%int2cases beside%i754for:gth/gte/lth/lte— per-lane signed (two's-complement) compare → 1/0 ray.cumsum(full wrapping sum),dot(sum of products, wrapping),min/max(extremum by two's-complement order),argmin/argmax(forward ravel-index of the first extremum).Native per lane (8…128-bit, no GMP). Signed compares reinterpret the lane as the matching signed C type (native signed compare is two's-complement order). Scalar reductions box via
+scalar-to-ray's shape (all-1s of the input rank); argmin/argmax return the bare index.Verified jet == numerics
%int2Hoon on a hoon-135 fakezod across native widths incl. 128-bit, ties, and negatives.🤖 Generated with Claude Code