1 #ifndef STAN_MATH_PRIM_SCAL_PROB_UNIFORM_LCCDF_HPP 2 #define STAN_MATH_PRIM_SCAL_PROB_UNIFORM_LCCDF_HPP 16 #include <boost/random/uniform_real_distribution.hpp> 17 #include <boost/random/variate_generator.hpp> 23 template <
typename T_y,
typename T_low,
typename T_high>
26 static const char*
function(
"uniform_lccdf");
37 T_partials_return ccdf_log(0.0);
41 check_greater(
function,
"Upper bound parameter", beta, alpha);
44 "Lower bound parameter", alpha,
45 "Upper bound parameter", beta);
52 for (
size_t n = 0; n < N; n++) {
53 const T_partials_return y_dbl =
value_of(y_vec[n]);
62 operands_and_partials(y, alpha, beta);
63 for (
size_t n = 0; n < N; n++) {
64 const T_partials_return y_dbl =
value_of(y_vec[n]);
65 const T_partials_return alpha_dbl =
value_of(alpha_vec[n]);
66 const T_partials_return beta_dbl =
value_of(beta_vec[n]);
67 const T_partials_return b_min_a = beta_dbl - alpha_dbl;
68 const T_partials_return ccdf_log_ = 1.0 - (y_dbl - alpha_dbl) / b_min_a;
70 ccdf_log +=
log(ccdf_log_);
73 operands_and_partials.
d_x1[n] -= 1.0 / b_min_a / ccdf_log_;
75 operands_and_partials.
d_x2[n] -= (y_dbl - beta_dbl) / b_min_a
76 / b_min_a / ccdf_log_;
78 operands_and_partials.
d_x3[n] += (y_dbl - alpha_dbl) / b_min_a
79 / b_min_a / ccdf_log_;
81 return operands_and_partials.
value(ccdf_log);
VectorView< T_return_type, false, true > d_x2
return_type< T_y, T_low, T_high >::type uniform_lccdf(const T_y &y, const T_low &alpha, const T_high &beta)
void check_finite(const char *function, const char *name, const T_y &y)
Check if y is finite.
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.
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)
boost::math::tools::promote_args< typename scalar_type< T1 >::type, typename scalar_type< T2 >::type, typename scalar_type< T3 >::type, typename scalar_type< T4 >::type, typename scalar_type< T5 >::type, typename scalar_type< T6 >::type >::type type
Metaprogram to determine if a type has a base scalar type that can be assigned to type double...
void check_not_nan(const char *function, const char *name, const T_y &y)
Check if y is not NaN.
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)
void check_greater(const char *function, const char *name, const T_y &y, const T_low &low)
Check if y is strictly greater than low.
void check_consistent_sizes(const char *function, const char *name1, const T1 &x1, const char *name2, const T2 &x2)
Check if the dimension of x1 is consistent with x2.
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
VectorView< T_return_type, false, true > d_x1