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- Subject: Re: 32-bit CUPs with support for IEEE 754
- From: KHMan <keinhong@...>
- Date: Thu, 09 Jun 2011 01:32:55 +0800
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
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...
Kein-Hong Man (esq.)
Kuala Lumpur, Malaysia