R Under development (unstable) (2024-03-24 r86185 ucrt) -- "Unsuffered Consequences"
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> library('skellam')
> lambda1 = 3
> lambda2 = 2
> par(mfrow=c(1,2))
> 
> x = rskellam(100,lambda1, lambda2)
> hist(x,prob=TRUE, main='skellam')
> 
> xseq = seq(min(x)-1, max(x)+1)
> lines(xseq, dskellam(xseq, lambda1, lambda2),col='red')
> legend('topright', fill=c('black','red'), legend=c('hist','dens'))
> 
> 
> pseq = seq(0,1,len=1000)
> plot(qskellam(pseq, lambda1, lambda2), pseq, type='l', xlab='x', ylab='quant')
> lines(xseq, pskellam(xseq, lambda1, lambda2),col='red')
> legend('topright', fill=c('black','red'), legend=c('qskellam','pskellam'))
> 
> proc.time()
   user  system elapsed 
   0.29    0.09    0.35