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binomial_rng.hpp
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1 #ifndef STAN_MATH_PRIM_SCAL_PROB_BINOMIAL_RNG_HPP
2 #define STAN_MATH_PRIM_SCAL_PROB_BINOMIAL_RNG_HPP
3 
4 #include <boost/random/binomial_distribution.hpp>
5 #include <boost/random/variate_generator.hpp>
23 
24 
25 namespace stan {
26 
27  namespace math {
28 
29  template <class RNG>
30  inline int
31  binomial_rng(const int N,
32  const double theta,
33  RNG& rng) {
34  using boost::variate_generator;
35  using boost::binomial_distribution;
36 
37  static const char* function("stan::math::binomial_rng");
38 
43 
44  check_nonnegative(function, "Population size parameter", N);
45  check_finite(function, "Probability parameter", theta);
46  check_less_or_equal(function, "Probability parameter", theta, 1.0);
47  check_greater_or_equal(function, "Probability parameter", theta, 0.0);
48 
49  variate_generator<RNG&, binomial_distribution<> >
50  binomial_rng(rng, binomial_distribution<>(N, theta));
51  return binomial_rng();
52  }
53 
54  }
55 }
56 #endif
bool check_greater_or_equal(const char *function, const char *name, const T_y &y, const T_low &low)
Return true if y is greater or equal than low.
bool check_less_or_equal(const char *function, const char *name, const T_y &y, const T_high &high)
Return true if y is less or equal to high.
bool check_finite(const char *function, const char *name, const T_y &y)
Return true if y is finite.
bool check_nonnegative(const char *function, const char *name, const T_y &y)
Return true if y is non-negative.
int binomial_rng(const int N, const double theta, RNG &rng)

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