> There's a recommendation that NaN payloads propagate I looked more closely, and yes, the signalling NaN + 0.0 always changed the bit pattern, and the quiet N

> There's a recommendation that NaN payloads propagate I looked more closely, and yes, the signalling NaN + 0.0 always changed the bit pattern, and the quiet NaN + 0.0 always stayed the same. Thank you for your informative details about IEEE 754.