Function HumanReadableNumBytes

tensorflow/core/lib/strings/numbers.cc:459–492

}

string HumanReadableNumBytes(int64 num_bytes) {
  if (num_bytes == kint64min) {
    // Special case for number with not representable negation.
    return "-8E";
  }

  const char* neg_str = (num_bytes < 0) ? "-" : "";
  if (num_bytes < 0) {
    num_bytes = -num_bytes;
  }

  // Special case for bytes.
  if (num_bytes < 1024) {
    // No fractions for bytes.
    char buf[8];  // Longest possible string is '-XXXXB'
    snprintf(buf, sizeof(buf), "%s%lldB", neg_str,
             static_cast<int64>(num_bytes));
    return string(buf);
  }

  static const char units[] = "KMGTPE";  // int64 only goes up to E.
  const char* unit = units;
  while (num_bytes >= static_cast<int64>(1024) * 1024) {
    num_bytes /= 1024;
    ++unit;
    CHECK(unit < units + TF_ARRAYSIZE(units));
  }

  // We use SI prefixes.
  char buf[16];
  snprintf(buf, sizeof(buf), ((*unit == 'K') ? "%s%.1f%ciB" : "%s%.2f%ciB"),
           neg_str, num_bytes / 1024.0, *unit);
  return string(buf);
}

string HumanReadableElapsedTime(double seconds) {
  string human_readable;