Stan Math Library  2.9.0
reverse mode automatic differentiation
inv_logit.hpp
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1 #ifndef STAN_MATH_FWD_SCAL_FUN_INV_LOGIT_HPP
2 #define STAN_MATH_FWD_SCAL_FUN_INV_LOGIT_HPP
3 
4 #include <stan/math/fwd/core.hpp>
5 
7 
8 namespace stan {
9 
10  namespace math {
11 
12  template <typename T>
13  inline
14  fvar<T>
15  inv_logit(const fvar<T>& x) {
16  using std::exp;
17  using std::pow;
19  return fvar<T>(inv_logit(x.val_),
20  x.d_ * inv_logit(x.val_) * (1 - inv_logit(x.val_)));
21  }
22  }
23 }
24 #endif
fvar< T > inv_logit(const fvar< T > &x)
Definition: inv_logit.hpp:15
fvar< T > exp(const fvar< T > &x)
Definition: exp.hpp:10
fvar< T > pow(const fvar< T > &x1, const fvar< T > &x2)
Definition: pow.hpp:18

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