uniform {rlecuyer}

Generate random numbers

Description

.lec.uniform generates U(0,1) random numbers.

.lec.uniform.int generates random numbers from the discrete uniform distribution over integers.

Usage

.lec.uniform (name, n = 1)

.lec.uniform.int (name, n = 1, a = 0, b = 10)

Arguments

name

name of the stream.

n

number of random numbers to be generated.

a, b

interval from which the integer random numbers should be generated.

Details

.lec.uniform and .lec.uniform.int, respectively, are wrapper functions for the C functions RngStream_RandU01 and RngStream_RandInt, respectively (L'Ecuyer et al, 2002).

Note: Since the stream is here identified by name, there is no need for using the CurrentStream pair.

Value

A vector of n random numbers.

References

P. L'Ecuyer, R. Simard, E.J.Chen and W.D.Kelton: An Object-Oriented Random-Number Package With Many Long Streams and Substreams; Operations Research, vol. 50, nr. 6, 2002.

See Also

.lec.CurrentStream

Examples

nstreams <- 10       # number of streams
seed<-rep(1,6)
.lec.SetPackageSeed(seed)
names <- paste("mystream",1:nstreams,sep="")
.lec.CreateStream(names)
for (i in 1:nstreams)   # generate 10 RNs from each stream
      print(.lec.uniform(names[i],10))
.lec.DeleteStream(names)