Function pairSetEqual

test/compute-engine/diophantine.test.ts:392–398

(a: [bigint, bigint][], b: [bigint, bigint][])

}

function pairSetEqual(a: [bigint, bigint][], b: [bigint, bigint][]): boolean {
  const as = new Set(dedupePairsLocal(a).map(pairKey));
  const bs = new Set(dedupePairsLocal(b).map(pairKey));
  if (as.size !== bs.size) return false;
  for (const k of as) if (!bs.has(k)) return false;
  return true;
}

/**
 * Applies the family-generation rule documented on `PellResult`: every class