1 #ifndef STAN_MATH_PRIM_SCAL_PROB_INV_CHI_SQUARE_RNG_HPP
2 #define STAN_MATH_PRIM_SCAL_PROB_INV_CHI_SQUARE_RNG_HPP
4 #include <boost/random/chi_squared_distribution.hpp>
5 #include <boost/random/variate_generator.hpp>
33 using boost::variate_generator;
34 using boost::random::chi_squared_distribution;
36 static const char*
function(
"stan::math::inv_chi_square_rng");
42 variate_generator<RNG&, chi_squared_distribution<> >
double chi_square_rng(const double nu, RNG &rng)
double inv_chi_square_rng(const double nu, RNG &rng)
bool check_positive_finite(const char *function, const char *name, const T_y &y)
Return true if y is positive and finite.