Function cbm_lsh_query_into

src/simhash/minhash.c:492–523

}

int cbm_lsh_query_into(const cbm_lsh_index_t *idx, const cbm_minhash_t *fp,
                       const cbm_lsh_entry_t **out_buf, int out_cap) {
    if (!idx || !fp || !out_buf || out_cap <= 0) {
        return 0;
    }

    /* Thread-local dedup — no shared state touched. */
    seen_set_t seen;
    seen_set_init(&seen);

    int count = 0;
    for (int b = 0; b < CBM_LSH_BANDS; b++) {
        uint32_t h = band_hash(fp, b);
        const lsh_bucket_t *bucket = &idx->bands[b][h];
        if (bucket->count > MAX_BUCKET_SIZE) {
            continue;
        }
        for (int i = 0; i < bucket->count && count < out_cap; i++) {
            const cbm_lsh_entry_t *candidate = &idx->entries[bucket->items[i]];
            if (!seen_set_insert(&seen, candidate->node_id)) {
                continue;
            }
            out_buf[count++] = candidate;
        }
        if (count >= out_cap) {
            break;
        }
    }

    seen_set_free(&seen);
    return count;
}

void cbm_lsh_free(cbm_lsh_index_t *idx) {
    if (!idx) {