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Hi, I found the code snippet I attached in a Flexmotion VI and it checks for counter overflow by subtracting the two unsigned long timestamp values and testing whether the result is <0. Now I've tried a similar construct at my machine and it behaves just as expected: The 32 bit counter rolls over as it should but since we are testing an unsigned value to be <0 the test never gives result "true". Since the code in the "false" branch simply uses the result of the subtraction that should not be a practicat problem but I am wondering whether there is some clever trick behind that or if that is just the useless. Cheers, flintstone By the way: Sorry for the double "just" and for the (succeeded) experiment whether one can rate the own topic.
