(42) Double precision summation and DOT

[Werner]

Hello Albert
first off, Kahan's 4/3 formula results in 10^-11 and 10^-33, not 10^-12 and 10^-34.
And your last 1/3 entry gives 2^-53 for the binary version, while I need 2^-54.
If you can beat 0.44 ENTER 1/X 1/X -, let me know ;-)
Cheers, Werner