Function ExponentToPrefix

deps/google-benchmark/src/string_util.cc:89–101

}

std::string ExponentToPrefix(int64_t exponent, bool iec) {
  if (exponent == 0) return "";

  const int64_t index = (exponent > 0 ? exponent - 1 : -exponent - 1);
  if (index >= kUnitsSize) return "";

  const char* array =
      (exponent > 0 ? (iec ? kBigIECUnits : kBigSIUnits) : kSmallSIUnits);
  if (iec)
    return array[index] + std::string("i");
  else
    return std::string(1, array[index]);
}

std::string ToBinaryStringFullySpecified(double value, double threshold,
                                         int precision, double one_k = 1024.0) {