Kahan summation algorithm

[Werner]

What I have never seen mentioned is the fact that this algorithm is meant for binary floating point. Try adding x=y= 1e12-2
You'll get
s := 2e12
c := -2, while it should be -4

BTW my version reads:

Code:

*LBL "K+"
 +
 RCL+ ST Y
 STO- ST Y
 X<>Y
 RCL+ ST L
 END

same size.

Werner