Function interp_rpois 

fn interp_rpois(
    args: &[RValue],
    named: &[(String, RValue)],
    context: &BuiltinContext<'_>,
) -> Result<RValue, RError>

Random Poisson deviates.

Generates n random values from a Poisson distribution.

@param n number of observations @param lambda mean rate parameter (default 1) @return integer vector of length n