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digamma.hpp
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1 #ifndef STAN_MATH_PRIM_MAT_FUN_DIGAMMA_HPP
2 #define STAN_MATH_PRIM_MAT_FUN_DIGAMMA_HPP
3
4 #include <stan/math/prim/mat/vectorize/apply_scalar_unary.hpp>
5 #include <boost/math/special_functions/digamma.hpp>
6
7 namespace stan {
8 namespace math {
9
17 struct digamma_fun {
18 template <typename T>
19 static inline T fun(const T& x) {
20 using boost::math::digamma;
21 return digamma(x);
22 }
23 };
24
32 template <typename T>
33 inline typename apply_scalar_unary<digamma_fun, T>::return_t
34 digamma(const T& x) {
35 return apply_scalar_unary<digamma_fun, T>::apply(x);
36 }
37
38 }
39 }
40
41 #endif
stan
Definition: log_sum_exp.hpp:8
stan::math::digamma
var digamma(const stan::math::var &a)
Definition: digamma.hpp:24
stan::math::digamma_fun
Structure to wrap digamma() so it can be vectorized.
Definition: digamma.hpp:17
stan::math::digamma_fun::fun
static T fun(const T &x)
Definition: digamma.hpp:19
stan::math::apply_scalar_unary::apply
static return_t apply(const T &x)
Return the result of applying the function defined by the template parameter F to the specified matri...
Definition: apply_scalar_unary.hpp:58
apply_scalar_unary.hpp
stan::math::digamma
fvar< T > digamma(const fvar< T > &x)
Definition: digamma.hpp:16

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