Re: __builtin_cpow((0,0),(0,0))

[Marcin Dalecki <martin at dalecki dot de>]

On 2005-03-07, at 17:31, Duncan Sands wrote:
> > I would agree with Paolo that the most imporant point is arguably
> > consistency, and it looks like that is pow(0.0,0.0)=1
>
> just so long as everyone understands that they are upholding the
> standard, not mathematics, then that is fine by me :)
>
> All the best,
>
> Duncan.
>
> PS: There is always the question of which standard is being upheld,
> since presumably both the Fortran and Ada standards have something
> to say about this.

The "blind appeal" to higher authority isn't a proper argument as well.
The proper argument is just that: convenience in numerical computations 
during
the modeling of real numbers on finite devices. And just this 
convenience is
represented by what the "standard" says.