Re: A Level 2 query
On 2013-06-28, at 11:15 AM, Vincent Lefevre <vincent@xxxxxxxxxx> wrote:
> On 2013-06-21 15:08:33 +0100, John Pryce wrote:
>> I await an answer to my query: what about an implementation that by
>> default evaluates an expression in single precision (but stores the
>> result in double) even when its inputs are double precision
>> intervals? My view at present is: that doesn't violate the standard,
>> it's just lousy QoI.
>
> It doesn't violate the standard in the "valid" accuracy mode. But
> if the implementation claimed that the function is implemented in
> the "accurate" or "tightest" accuracy mode, this would violate the
> standard.
I have not seen an application where single precisions intervals are more useful
than double. Could anyone point out to such applications?
Regards,
Ned Nedialkov