Does anyone know off-hand which normal arguments cause a subnormal result for a correctly rounded double-precision sin or cos?
Show this thread
-
The closest double to a nonzero multiple of π/2 is 0x1.6d61b58c99c43p-60 away from n*π/2.
Show this thread
Oh! So the answer is there aren't any? What's with sin(smallest normal number)? Wouldn't rounding rules allow that to be subnormal?
-
-
I think round-to-nearest sine should make the result the same as the argument, without checking. It shouldn't even be close.
-
I believe to remember that transcendental functions may always be off by up to one ULP. But maybe that's nonsense, I would have to check..
- Show replies
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.