params<-c(.4,9,5,7)
pgfDkattitypeh2(.5,params)
## The function is currently defined as
pgfDkattitypeh2 <- function(s,params) {
require(hypergeo)
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)<4)
stop("At least one value in params is missing")
if (length(params)>4)
stop("The length of params is 4")
theta<-params[1]
a<-params[2]
b<-params[3]
k<-params[4]
if (theta<=0)
stop ("Parameter theta must be positive")
if (a<=0)
stop ("Parameter a must be positive")
if (b<=0)
stop ("Parameter b must be positive")
if (k<=0)
stop ("Parameter k must be positive")
a*k*theta/(a+b)*Re(hypergeo(k+1,a+1,a+b+1,theta*(s-1)))
}
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