params<-4
pgfpoissonlindley(.5,params)
## The function is currently defined as
pgfpoissonlindley <- function(s,params) {
k<-s[abs(s)>1]
if (length(k)>0)
warning("At least one element of the vector s are out of interval [-1,1]")
if (length(params)>1)
stop("The length of params is 1")
theta<-params[1]
if (theta<=0)
stop ("Parameter lambda must be positive")
theta^2*(theta+2-s)/((theta+1)*(theta+1-s)^2)
}
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