Stan Math Library  2.14.0
reverse mode automatic differentiation
trigamma.hpp
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1 #ifndef STAN_MATH_REV_SCAL_FUN_TRIGAMMA_HPP
2 #define STAN_MATH_REV_SCAL_FUN_TRIGAMMA_HPP
3 
4 #include <stan/math/rev/core.hpp>
8 
9 namespace stan {
10  namespace math {
11 
20  inline var trigamma(const var& u) {
21  return trigamma_impl(u);
22  }
23 
24  }
25 }
26 #endif
T trigamma_impl(const T &x)
Return the trigamma function applied to the argument.
Definition: trigamma.hpp:30
Independent (input) and dependent (output) variables for gradients.
Definition: var.hpp:30
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:21

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