One of these things (is not like the others)

[Christopher Mitchell]

Anyone else had trouble with the new U64 datatype?

[altenbach]

What kind of trouble are you having?

[Christopher Mitchell]

Lets try this again....

The VI that demonstrates the problem should be attached...

[chrisger]

hi there

same thing with LV 7.1 and SGL, DBL or EXT - precision inputs. seems to be a limitation due to the algorithm used for calculation of sin(x).

[altenbach]

I agree, this has nothing to do with U64. It is just a bug in the sine function that returns the input number if the input is larger than a certain (very big) threshold. The value of the U64 can reach this threshold, while it exceeds the range of U32 and below.

As a workaround, you could use "quotient and remainder" and divide by 2*Pi, then feed the remainder to the sine function. In any case, it probably does not make much sense, because the sine function is a DBL function and you'll run out of meningful digits at 1e15. A periodic function such as Sine will not make much sense if the minimal increment jumps many periods. All you see is randomness.

Still, I agree that there is a bug. Sine should probably return zero and not some value outside +/-1 for huge inputs. 😮

[Ben]

So in LV a circle DOES have a begining and an end

And I was so looking forward to that next Big Bang

Ben