Jamin: Here’s some google juice for

you.

Got yet another solution to the floating point problem, this one from

Ingo Luetkebohle. He pointed out the existence of DBL_MANT_DIG and

frexp(), so one can simply check whether the difference in exponents

is greater than the number of digits in the mantissa. While it’s not

as short a solution as using the volatile keyword, this is still a

cool solution and I’m sure it can come in handy for a variety of other

situations.