On Monday, 25 August 2014 at 23:29:21 UTC, Walter Bright wrote:
On 8/25/2014 4:15 PM, "Ola Fosheim Grøstad"
<[email protected]>" wrote:
On Monday, 25 August 2014 at 21:24:11 UTC, Walter Bright wrote:
I didn't know that. But recall I did implement it in DMC++,
and it turned out
to simply not be useful. I'd be surprised if the new C++
support for it does
anything worthwhile.
Well, one should initialize with signaling NaN. Then you get
an exception if you
try to compute using uninitialized values.
That's the theory. The practice doesn't work out so well.
To be more concrete:
Processors from AMD have signalling NaN behaviour which is
different from processors from Intel.
And the situation is worst on most other architectures. It's a
lost cause, I think.
