Signature Description Parameters
template<typename T>
std::vector<T>
gen_poisson_dist(std::size_t n, const RandGenParams<T> &params = { });
Produces random non-negative integer values i, distributed according to
discrete probability function:
                      -u     i
                     e     u
          P(i|u) = ------------
                        i!
        
It returns the vector of results
Optional parameters to set:
mean, seed
T: Type can only be [unsigned] char, [unsigned] short, [unsigned] int, [unsigned] long int, or [unsigned] long long int
n: Number of numerics to generate
params: List of all applicable parameters, see DataFrameTypes.h