From: John Maddock (jz.maddock_at_[hidden])
Date: 2022-02-17 17:44:46
>> Does anyone have a (non-theoretical) use case for signalling quad-precision NaN's? And or a working test case?
>>
>> Thanks, John.
>>
> Crap, neither does snanf128, of course; hope that's it then :-)
> https://godbolt.org/z/v854oG8E5
That generates a NaN that has the same general appearance as a
double-precision signalling NaN, but I'm unable to actually make it
*signal*. Unless this is supported by GCC and libquadmath, it still
looks to me that there are no signalling NaN's for __float128? To
repeat myself: do you have a working test case where signalling NaN's
actually do something useful? Otherwise it looks to me as though
has_signalling_NaN really should be false?
John.
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