Automatic Differentiation
 
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trigamma.hpp
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1#ifndef STAN_MATH_FWD_FUN_TRIGAMMA_HPP
2#define STAN_MATH_FWD_FUN_TRIGAMMA_HPP
3
4#include <stan/math/fwd/meta.hpp>
5#include <stan/math/fwd/core.hpp>
6#include <stan/math/fwd/fun/inv.hpp>
7#include <stan/math/fwd/fun/square.hpp>
8#include <stan/math/fwd/fun/sin.hpp>
9#include <stan/math/fwd/fun/inv_square.hpp>
10#include <stan/math/prim/fun/trigamma.hpp>
11
12namespace stan {
13namespace math {
14
24template <typename T>
25inline fvar<T> trigamma(const fvar<T>& u) {
26 return trigamma_impl(u);
27}
28
29} // namespace math
30} // namespace stan
31#endif
inv_square.hpp
stan::math::trigamma_impl
T trigamma_impl(const T &x)
Return the trigamma function applied to the argument.
Definition trigamma.hpp:37
stan::math::trigamma
fvar< T > trigamma(const fvar< T > &u)
Return the value of the trigamma function at the specified argument (i.e., the second derivative of t...
Definition trigamma.hpp:25
stan
The lgamma implementation in stan-math is based on either the reentrant safe lgamma_r implementation ...
Definition unit_vector_constrain.hpp:15
stan::math::fvar
This template class represents scalars used in forward-mode automatic differentiation,...
Definition fvar.hpp:40