rngtools {rngtools} | R Documentation |
This package contains a set of functions for working with Random Number Generators (RNGs). In particular, it defines a generic S4 framework for getting/setting the current RNG, or RNG data that are embedded into objects for reproducibility.
Notably, convenient default methods greatly facilitate the way current RNG settings can be changed.
showRNG() s <- getRNG() RNGstr(s) RNGtype(s) # get what would be the RNG seed after set.seed s <- nextRNG(1234) showRNG(s) showRNG( nextRNG(1234, ndraw=10) ) # change of RNG kind showRNG() k <- RNGkind() k[2L] <- 'Ahrens' try( RNGkind(k) ) setRNG(k) showRNG() # set encoded kind setRNG(501L) showRNG() # use as set seed setRNG(1234) showRNG() r <- getRNG() # extract embedded RNG specifications runif(10) setRNG(list(1, rng=1234)) rng.equal(r) # restore default RNG (e.g., after errors) RNGrecovery() showRNG()