> + if (prev > val && (prev - val) < 256) > + delta = 0; > + > + return delta;
Also, 'prev' is a true 64bit value, but 'val' is only ever 32bits.
So once the 64bit 'prev' exceeds 2^32+256 both 'prev > val'
and 'prev - val' are true regardless of the value of 'val'.
This will lead to jumps in the value ....
David
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