R Under development (unstable) (2023-12-09 r85665 ucrt) -- "Unsuffered Consequences"
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> suppressPackageStartupMessages(library(float))
> 
> tol = 1e-6
> 
> x = matrix(1:6, 3, 2)
> s = fl(x)
> 
> test = dbl(rep(s, 5))
> truth = rep(x, 5)
> stopifnot(all.equal(test, truth, tol=tol))
> 
> proc.time()
   user  system elapsed 
   0.31    0.03    0.32