code: static boolean epsilonEquals(
          DoubleTuple t0, DoubleTuple t1, double epsilon)
      {
          if (t0 == t1)
          {
              return true;
          }
          int n0 = t0.getSize();
          int n1 = t1.getSize();
          if (n0 != n1)
          {
              return false;
          }
          for (int i=0; i<n0; i++)
          {
              double v0 = t0.get(i);
              double v1 = t1.get(i);
              if (Math.abs(v0-v1) > epsilon)
              {
                  return false;
              }
          }
          return true;
      }
docs: Returns whether the given tuples are equal up to the given epsilon.
  That is, returns whether they have the same {@link Tuple#getSize() size},
  and the absolute difference between two corresponding elements is less
  than or equal to the given epsilon.
  
  @param t0 The first tuple
  @param t1 The second tuple
  @param epsilon The epsilon
  @return Whether the tuples are epsilon-equal