Nothing
gchisq <- function(df)
{
if (is.numeric(df) == TRUE)
{
output <- vector(length = length(df))
pos.NA <- df<=0
output[pos.NA] <- NA
output[!pos.NA] <- 2*gamma((1 + df[!pos.NA])/2)/(df[!pos.NA]*gamma(df[!pos.NA]/2)*sqrt(pi))
sum.NA <- sum(pos.NA)
if (sum.NA == 1L)
{
warning("an element of the object 'df' is not positive")
}
else if (sum.NA >= 1L)
{
warning(paste(sum.NA, " elements of the object 'df' are not positive"))
}
}
else
{
output <- NA
warning("object 'df' must be numeric")
}
return(output)
}
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