NachtHemd
(NachtHemd)
6
From the IEEE 754 standard:
Moreover, there are two zero values, called signed zeros: the sign bit specifies whether a zero is +0 (positive zero) or −0 (negative zero).
−0 and +0 compare as equal
Compute sign as Csign = Asign XOR Bsign
If you multiply two floats with differing Sign bit, the standard requires the result to have the Sign bit set to 1, making it negative.
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