code: public static long max(LongTuple t)
      {
          return LongTupleFunctions.reduce(
              t, Long.MIN_VALUE, Math::max);
      }
docs: Computes the maximum value that occurs in the given tuple,
  or <code>Long.MIN_VALUE</code> if the given tuple has a
  size of 0.
  
  @param t The input tuple
  @return The maximum value