Stan Math Library  2.20.0
reverse mode automatic differentiation
bernoulli_rng.hpp
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1 #ifndef STAN_MATH_PRIM_SCAL_PROB_BERNOULLI_RNG_HPP
2 #define STAN_MATH_PRIM_SCAL_PROB_BERNOULLI_RNG_HPP
3 
7 #include <boost/random/bernoulli_distribution.hpp>
8 #include <boost/random/variate_generator.hpp>
9 
10 namespace stan {
11 namespace math {
12 
27 template <typename T_theta, class RNG>
29  const T_theta& theta, RNG& rng) {
30  using boost::bernoulli_distribution;
31  using boost::variate_generator;
32 
33  static const char* function = "bernoulli_rng";
34 
35  check_finite(function, "Probability parameter", theta);
36  check_bounded(function, "Probability parameter", theta, 0.0, 1.0);
37 
38  scalar_seq_view<T_theta> theta_vec(theta);
39  size_t N = length(theta);
41 
42  for (size_t n = 0; n < N; ++n) {
43  variate_generator<RNG&, bernoulli_distribution<> > bernoulli_rng(
44  rng, bernoulli_distribution<>(theta_vec[n]));
45  output[n] = bernoulli_rng();
46  }
47 
48  return output.data();
49 }
50 
51 } // namespace math
52 } // namespace stan
53 #endif
void check_finite(const char *function, const char *name, const T_y &y)
Check if y is finite.
void check_bounded(const char *function, const char *name, const T_y &y, const T_low &low, const T_high &high)
Check if the value is between the low and high values, inclusively.
VectorBuilder< true, int, T_theta >::type bernoulli_rng(const T_theta &theta, RNG &rng)
Return a Bernoulli random variate with specified chance of success parameter using the specified rand...
scalar_seq_view provides a uniform sequence-like wrapper around either a scalar or a sequence of scal...
size_t length(const std::vector< T > &x)
Returns the length of the provided std::vector.
Definition: length.hpp:16
VectorBuilder allocates type T1 values to be used as intermediate values.

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