1 #ifndef STAN_MATH_PRIM_SCAL_PROB_UNIFORM_CCDF_LOG_HPP
2 #define STAN_MATH_PRIM_SCAL_PROB_UNIFORM_CCDF_LOG_HPP
15 #include <boost/random/uniform_real_distribution.hpp>
16 #include <boost/random/variate_generator.hpp>
22 template <
typename T_y,
typename T_low,
typename T_high>
23 typename return_type<T_y, T_low, T_high>::type
25 static const char*
function(
"uniform_ccdf_log");
36 T_partials_return ccdf_log(0.0);
40 check_greater(
function,
"Upper bound parameter", beta, alpha);
43 "Lower bound parameter", alpha,
44 "Upper bound parameter", beta);
51 for (
size_t n = 0; n < N; n++) {
52 const T_partials_return y_dbl =
value_of(y_vec[n]);
61 operands_and_partials(y, alpha, beta);
62 for (
size_t n = 0; n < N; n++) {
63 const T_partials_return y_dbl =
value_of(y_vec[n]);
64 const T_partials_return alpha_dbl =
value_of(alpha_vec[n]);
65 const T_partials_return beta_dbl =
value_of(beta_vec[n]);
66 const T_partials_return b_min_a = beta_dbl - alpha_dbl;
67 const T_partials_return ccdf_log_ = 1.0 - (y_dbl - alpha_dbl) / b_min_a;
69 ccdf_log +=
log(ccdf_log_);
72 operands_and_partials.
d_x1[n] -= 1.0 / b_min_a / ccdf_log_;
74 operands_and_partials.
d_x2[n] -= (y_dbl - beta_dbl) / b_min_a
75 / b_min_a / ccdf_log_;
77 operands_and_partials.
d_x3[n] += (y_dbl - alpha_dbl) / b_min_a
78 / b_min_a / ccdf_log_;
80 return operands_and_partials.
value(ccdf_log);
VectorView< T_return_type, false, true > d_x2
bool check_not_nan(const char *function, const char *name, const T_y &y)
Return true if y is not NaN.
T value_of(const fvar< T > &v)
Return the value of the specified variable.
fvar< T > log(const fvar< T > &x)
T_return_type value(double value)
Returns a T_return_type with the value specified with the partial derivatves.
size_t length(const std::vector< T > &x)
Metaprogram to determine if a type has a base scalar type that can be assigned to type double...
This class builds partial derivatives with respect to a set of operands.
VectorView< T_return_type, false, true > d_x3
size_t max_size(const T1 &x1, const T2 &x2)
return_type< T_y, T_low, T_high >::type uniform_ccdf_log(const T_y &y, const T_low &alpha, const T_high &beta)
bool check_finite(const char *function, const char *name, const T_y &y)
Return true if y is finite.
bool check_consistent_sizes(const char *function, const char *name1, const T1 &x1, const char *name2, const T2 &x2)
Return true if the dimension of x1 is consistent with x2.
VectorView is a template expression that is constructed with a container or scalar, which it then allows to be used as an array using operator[].
boost::math::tools::promote_args< typename partials_type< typename scalar_type< T1 >::type >::type, typename partials_type< typename scalar_type< T2 >::type >::type, typename partials_type< typename scalar_type< T3 >::type >::type, typename partials_type< typename scalar_type< T4 >::type >::type, typename partials_type< typename scalar_type< T5 >::type >::type, typename partials_type< typename scalar_type< T6 >::type >::type >::type type
bool check_greater(const char *function, const char *name, const T_y &y, const T_low &low)
Return true if y is strictly greater than low.
VectorView< T_return_type, false, true > d_x1