R Under development (unstable) (2023-12-13 r85679 ucrt) -- "Unsuffered Consequences"
Copyright (C) 2023 The R Foundation for Statistical Computing
Platform: x86_64-w64-mingw32/x64

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> 
>  library(rcdd)
If you want correct answers, use rational arithmetic.
See the Warnings sections in help pages for
    functions that do computational geometry.
> 
>  d <- 4
>  qux <- makeH(- diag(d), rep(0, d), rep(1, d), 1)
>  qux <- d2q(qux)
>  print(qux)
     [,1] [,2] [,3] [,4] [,5] [,6]
[1,] "1"  "1"  "-1" "-1" "-1" "-1"
[2,] "0"  "0"  "1"  "0"  "0"  "0" 
[3,] "0"  "0"  "0"  "1"  "0"  "0" 
[4,] "0"  "0"  "0"  "0"  "1"  "0" 
[5,] "0"  "0"  "0"  "0"  "0"  "1" 
attr(,"representation")
[1] "H"
> 
>  out <- scdd(qux)
>  print(out)
$output
     [,1] [,2] [,3] [,4] [,5] [,6]
[1,] "0"  "1"  "0"  "0"  "0"  "1" 
[2,] "0"  "1"  "0"  "0"  "1"  "0" 
[3,] "0"  "1"  "0"  "1"  "0"  "0" 
[4,] "0"  "1"  "1"  "0"  "0"  "0" 
attr(,"representation")
[1] "V"

> 
>  out <- scdd(out$output)
>  print(out)
$output
     [,1] [,2] [,3] [,4] [,5] [,6]
[1,] "0"  "1"  "-1" "-1" "-1" "0" 
[2,] "0"  "0"  "1"  "0"  "0"  "0" 
[3,] "0"  "0"  "0"  "1"  "0"  "0" 
[4,] "0"  "0"  "0"  "0"  "1"  "0" 
[5,] "1"  "-1" "1"  "1"  "1"  "1" 
attr(,"representation")
[1] "H"

> 
> 
> proc.time()
   user  system elapsed 
   0.14    0.03    0.15