2.220446e-16 ≈ 0 [Design Issues]

posted by Helmut Homepage – Vienna, Austria, 2019-12-22 11:37 (1136 d 18:30 ago) – Posting: # 21016
Views: 5,263

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


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