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sS printBenchResult(long repetitions) {
  ret printBenchResult(lastTiming(), repetitions);
}

sS printBenchResult(long time, long repetitions) {
  ret printBenchResult("", time, repetitions);
}

sS printBenchResult(S msg, long repetitions) {
  ret printBenchResult(msg, lastTiming(), repetitions);
}

sS printBenchResult(long repetitions, S msg) {
  ret printBenchResult(msg, repetitions);
}

sS printBenchResult(S msg, long time, long repetitions) {
  double secs = toSeconds(time)/repetitions;
  S s = (empty(msg) ? "" : msg + ": ") + n2(repetitions, "step") + ". Each step took: ";
  if (secs >= 1) ret print(s + formatDouble(secs, 3) + " s");
  double ms = secs*1000;
  if (ms >= 1) ret print(s + formatDouble(ms, 3) + " ms");
  double us = ms*1000;
  if (us >= 1) ret print(s + formatDouble(us, 3) + " µs");
  double ns = us*1000;
  ret print(s + formatDouble(ns, 3) + " ns");
}