R Under development (unstable) (2023-12-09 r85665 ucrt) -- "Unsuffered Consequences"
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> suppressPackageStartupMessages(library(float))
> set.seed(1234)
> 
> 
> x1 = c(1, NaN, Inf, -Inf, 2, NA_real_)
> s1 = fl(x1)
> 
> x2 = matrix(1:30, 10)
> x2[c(1, 3, 5, 7), 3] = NA
> x2[2, 1] = NA
> s2 = fl(x2)
> 
> stopifnot(all.equal(is.na(s1), is.na(x1)))
> stopifnot(all.equal(is.na(s2), is.na(x2)))
> 
> 
> 
> stopifnot(all.equal(dbl(na.omit(s1)), na.omit(x1), check.attributes=FALSE))
> stopifnot(all.equal(dbl(na.omit(s2)), na.omit(x2), check.attributes=FALSE))
> 
> stopifnot(all.equal(dbl(na.omit(na.omit(s1))), na.omit(na.omit(x1)), check.attributes=FALSE))
> stopifnot(all.equal(dbl(na.omit(na.omit(s2))), na.omit(na.omit(x2)), check.attributes=FALSE))
> 
> proc.time()
   user  system elapsed 
   0.26    0.04    0.32