On 2005-06-22, Paul Rubin <http> wrote:
>>> Negative 0 isn't a NaN, it's just negative 0.
>>
>> Right, but it is hard to construct in standard C.
>
> Huh? It's just a hex constant.
Yup. There are two ways to construct a NaN. One is to do
something like (1e300*1e300)/(1e300*1e300) and hope for the
best. The other is to assume IEEE 754 just use 7f800000 or
7fc00000 depending on whether you want a signalling or quiet
NaN.
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