R Under development (unstable) (2023-12-09 r85665 ucrt) -- "Unsuffered Consequences"
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Platform: x86_64-w64-mingw32/x64

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> suppressPackageStartupMessages(library(float))
> 
> same = function(test, truth) stopifnot(all.equal(dbl(test), truth, tol=1e-6, check.attributes=FALSE))
> 
> m = 10
> n = 3
> 
> x = matrix(stats::rnorm(m*n), m, n)
> s = fl(x)
> 
> test = scale(s, TRUE, TRUE)
> truth = scale(x, TRUE, TRUE)
> same(test, truth)
> 
> test = scale(s, TRUE, FALSE)
> truth = scale(x, TRUE, FALSE)
> same(test, truth)
> 
> test = scale(s, FALSE, TRUE)
> truth = scale(x, FALSE, TRUE)
> same(test, truth)
> 
> test = scale(s, FALSE, FALSE)
> truth = scale(x, FALSE, FALSE)
> same(test, truth)
> 
> proc.time()
   user  system elapsed 
   0.26    0.09    0.34