On 12/6/23 4:28 AM, Adam D Ruppe wrote:
On Tuesday, 5 December 2023 at 19:24:51 UTC, confuzzled wrote:
Given the following union
union F
{
double x;
struct {
ulong lo;
ulong hi;
}
}
The default value of this would be `double.init`, since the first member
of the union is a `double`, which is a kind of NaN. This is non-zero.
Correct. So I expected a NaN output for x. However, I wasn't expecting
lo == 13835058055282163712 and hi == 32767 where x is of type real, or
lo == 9221120237041090560 and hi = 0 where x is of type double. Based on
the default initialization rules, I expected both lo and hi to have a
value of zero regardless if x is of type double or real. This is what
I'm trying to understand, how are these values derived?
Thanks again,
--confuzzled
