Floating Point + Threads?

[dsimcha]

On 4/16/2011 10:55 AM, Andrei Alexandrescu wrote:
> On 4/16/11 9:52 AM, dsimcha wrote:
>> Output:
>> Rounding mode: 0
>> 0.7853986633972191094
>> Rounding mode: 0
>> 0.7853986633972437348
>
> I think at this precision the difference may be in random bits. Probably
> you don't need to worry about it.
>
> Andrei

"random bits"?  I am fully aware that these low order bits are numerical 
fuzz and are meaningless from a practical perspective.  I am only 
concerned because I thought these bits are supposed to be deterministic 
even if they're meaningless.  Now that I've ruled out a bug in 
std.parallelism, I'm wondering if it's a bug in druntime or DMD.