Stan Math Library  2.11.0
reverse mode automatic differentiation
logit.hpp
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1 #ifndef STAN_MATH_FWD_SCAL_FUN_LOGIT_HPP
2 #define STAN_MATH_FWD_SCAL_FUN_LOGIT_HPP
3 
4 #include <stan/math/fwd/core.hpp>
5 
9 
10 namespace stan {
11 
12  namespace math {
13 
14  template <typename T>
15  inline
16  fvar<T>
17  logit(const fvar<T>& x) {
18  using stan::math::logit;
19  using stan::math::square;
21  if (x.val_ > 1 || x.val_ < 0)
23  else
24  return fvar<T>(logit(x.val_), x.d_ / (x.val_ - square(x.val_)));
25  }
26  }
27 }
28 #endif
const double NOT_A_NUMBER
(Quiet) not-a-number value.
Definition: constants.hpp:56
fvar< T > square(const fvar< T > &x)
Definition: square.hpp:15
fvar< T > logit(const fvar< T > &x)
Definition: logit.hpp:17

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