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"The Fast drives out the Slow even if the Fast is wrong." - W. Kahan"
I love that quote. Too bad Kahan's obsession with gradual underflow
and denormals was never translated into fast hardware treatment
of denormals.
And then there was Motorola's Fast Floating Point Library for the 68000
(Savage benchmark error score of 7%, compared to 0.000000001%
for the 80x87).