Re: 32-bit CUPs with support for IEEE 754

[KHMan <keinhong@...>]

On 6/9/2011 12:36 AM, David Given wrote:
> Alex Queiroz wrote:
> [...]
> >       Shouldn't you be asking about which CPUs do *not* support IEEE 754?
>
> In terms of which CPUs *don't*: x86 can be configured not to, but we all
> know about those. Also, some embedded ARM devices have a stripped-down
> maths library which doesn't do denorm numbers. (I got bitten by this the
> hard way.)

Also relevant may be x86's 8087 and SSE2 options -- one may end up 
with slightly different answers. Even with IEEE 754, for 
transcendental functions, I think the answers will not always be 
precisely the same for all processors or implementations.

Users might bump into issues even with IEEE 754 compliance...

--
Cheers,
Kein-Hong Man (esq.)
Kuala Lumpur, Malaysia