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* David Given:

> 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.

GCC does not support it when targeting generic (non-SSE2) i386 on
GNU/Linux, due to excess precision.

It might also be useful to know if the request is about the in-memory
representation or the semantics of operations.