2.220446e-16 ≈ 0 [Design Issues]

posted by Helmut Homepage – Vienna, Austria, 2019-12-22 10:37 2a02:8388:6bc2:ce80:6c4e:e4df:42f4:6510 – Posting: # 21016
Views: 624

Hi ElMaestro,

» » For observation 8 we have -3.608225e-16, I think,
» I think, is around the "effective zero" for fits in R at default settings on 64- and 32-bit systems.

Yes, it is. ;-)

x    <- -3.608225e-16
zero <- .Machine$double.eps
all.equal(x, zero)
[1] TRUE
zero
[1] 2.220446e-16


Cheers,
Helmut Schütz
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