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el/engram/test/run_geometry_tests.sh
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will.anderson 2a4c5c645a M9 foundation: relational-neighborhood geometry descriptor (read-only)
The stone the operator/drift/occupation work stands on: express a relational
neighborhood as the compact joint geometry Will specified (design §3/§5, node
e94371bd) — semantic side (centroid, principal-axis ellipsoid via dual-PCA,
radius) braided with the relational side (k-core skeleton, hub->periphery
centrality gradient), plus soft membership and a co-registration diagnostic
(corr of hebb strength vs semantic proximity — >0 reifies, <0 flags dreams).

Built ONLY on the two standalone modules — engram_vindex (ANN, the cloud) and
engram_store (embeddings + hebb adjacency, the skeleton). Pure C11 + libm; does
not link or touch el_runtime.c. Strictly READ-ONLY: never mutates nodes, edges,
activation, the index, or any retrieval path. Not yet wired into retrieval —
foundation only.

Self-contained test (test_geometry.c) synthesizes two known embedding clusters
with intra-cluster hebb edges and verifies the descriptor recovers the shape:
centroid on the seeded cluster, hub = relational center, skeleton = the strong
intra-cluster wiring, positive co-registration, sorted axis extents. PERF +
ASan/UBSan passes both green; needs no live data.
2026-08-12 19:40:25 -05:00

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#!/bin/sh
# Build + RUN the M9 FOUNDATION geometry-descriptor tests. Pure C11 (gcc/cc),
# stdlib + libm only. Standalone module — NOT folded through elb/elc. Two passes:
# 1. PERF — optimised (-O2, no sanitizer): the functional gate.
# 2. SAFETY — ASan + UBSan on the same suite (memory-safety is size-independent).
set -e
HERE=$(cd "$(dirname "$0")" && pwd)
RT="$HERE/../../lang/runtime"
CC=${CC:-cc}
SRC="$HERE/test_geometry.c $RT/engram_geometry.c $RT/engram_store.c $RT/engram_vindex.c"
WARN="-std=c11 -Wall -Wextra"
TMP=$(mktemp -d)
echo "### PASS 1: PERF (optimised, un-sanitised) — functional gate"
$CC $WARN -O2 -I"$RT" $SRC -lm -o "$TMP/perf"
"$TMP/perf"
echo
echo "### PASS 2: SAFETY (ASan/UBSan)"
$CC $WARN -O1 -g -fsanitize=address,undefined -fno-omit-frame-pointer -I"$RT" $SRC -lm -o "$TMP/safe"
ASAN_OPTIONS=${ASAN_OPTIONS:-detect_leaks=0} UBSAN_OPTIONS=halt_on_error=1 "$TMP/safe"