1 #ifndef STAN_MATH_PRIM_SCAL_PROB_UNIFORM_LPDF_HPP 2 #define STAN_MATH_PRIM_SCAL_PROB_UNIFORM_LPDF_HPP 16 #include <boost/random/uniform_real_distribution.hpp> 17 #include <boost/random/variate_generator.hpp> 44 template <
bool propto,
45 typename T_y,
typename T_low,
typename T_high>
47 uniform_lpdf(
const T_y& y,
const T_low& alpha,
const T_high& beta) {
48 static const char*
function(
"uniform_lpdf");
59 T_partials_return logp(0.0);
63 check_greater(
function,
"Upper bound parameter", beta, alpha);
66 "Lower bound parameter", alpha,
67 "Upper bound parameter", beta);
77 for (
size_t n = 0; n < N; n++) {
78 const T_partials_return y_dbl =
value_of(y_vec[n]);
85 T_partials_return, T_low, T_high>
86 inv_beta_minus_alpha(
max_size(alpha, beta));
87 for (
size_t i = 0; i <
max_size(alpha, beta); i++)
89 inv_beta_minus_alpha[i]
93 T_partials_return, T_low, T_high>
94 log_beta_minus_alpha(
max_size(alpha, beta));
95 for (
size_t i = 0; i <
max_size(alpha, beta); i++)
97 log_beta_minus_alpha[i]
101 operands_and_partials(y, alpha, beta);
102 for (
size_t n = 0; n < N; n++) {
104 logp -= log_beta_minus_alpha[n];
107 operands_and_partials.
d_x2[n] += inv_beta_minus_alpha[n];
109 operands_and_partials.
d_x3[n] -= inv_beta_minus_alpha[n];
111 return operands_and_partials.
value(logp);
114 template <
typename T_y,
typename T_low,
typename T_high>
118 return uniform_lpdf<false>(y, alpha, beta);
VectorView< T_return_type, false, true > d_x2
void check_finite(const char *function, const char *name, const T_y &y)
Check if y is finite.
return_type< T_y, T_low, T_high >::type uniform_lpdf(const T_y &y, const T_low &alpha, const T_high &beta)
The log of a uniform density for the given y, lower, and upper bound.
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)
Template metaprogram to calculate whether a summand needs to be included in a proportional (log) prob...
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)
VectorBuilder allocates type T1 values to be used as intermediate values.
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