R Under development (unstable) (2023-11-06 r85483 ucrt) -- "Unsuffered Consequences"
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> library(kappalab)
Loading required package: lpSolve
Loading required package: quadprog
Loading required package: kernlab
> 
> mu <- card.set.func(rnorm(9))
> stopifnot(is.cardinal(mu) == is.cardinal(as.set.func(mu)))
> 
> 
> 
> 
> proc.time()
   user  system elapsed 
   0.56    0.06    0.56