This reminds me of http://stackoverflow.com/questions/6841333/why-is-subtracting-these-two-times-in-1927-giving-a-strange-result/6841479#6841479 http://stackove

This reminds me of http://stackoverflow.com/questions/6841333/why-is-subtracting-these-two-times-in-1927-giving-a-strange-result/6841479#6841479 http://stackoverflow.com/questions/6841333/why-is-subtractin...