Stan Math Library  2.12.0
reverse mode automatic differentiation
log_inv_logit.hpp
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1 #ifndef STAN_MATH_FWD_SCAL_FUN_LOG_INV_LOGIT_HPP
2 #define STAN_MATH_FWD_SCAL_FUN_LOG_INV_LOGIT_HPP
3 
4 #include <stan/math/fwd/core.hpp>
5 
7 
8 namespace stan {
9  namespace math {
10 
11  template <typename T>
12  inline
13  fvar<T>
14  log_inv_logit(const fvar<T>& x) {
15  using std::exp;
16  return fvar<T>(log_inv_logit(x.val_),
17  x.d_ / (1 + exp(x.val_)));
18  }
19  }
20 }
21 #endif
fvar< T > exp(const fvar< T > &x)
Definition: exp.hpp:10
fvar< T > log_inv_logit(const fvar< T > &x)

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