Re: Motion P1788/M0029.01: Level-3-interface-only --- Final version to vote on
Dan
On 4 Jan 2012, at 20:47, Dan Zuras Intervals wrote:
>> This might conceivably make sense if you had a 200-processor machine =
>> where (inf,sup) was more efficient on 100 of the processors, and =
>> (-inf,sup) was more efficient the other 100, and the compiler inserts =
>> code to flip the relevant sign bit whenever it sees a datum is flying =
>> from one kind of processor to the other...??
>
> On a heterogeneous collection of machines, interchange
> would happen in exactly this manner. So the issue of
> operations among [lo,hi] or [-lo,hi], or even [lo,-hi]
> implementations never comes up because one never sees
> more than one implementation on any conforming system.
I was thinking of a system designed such that the existence of those 200 processors is invisible at user level, i.e. there is just one conforming system, not 200.
John