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inv_logit.hpp
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1 #ifndef STAN__MATH__FUNCTIONS__INV_LOGIT_HPP
2 #define STAN__MATH__FUNCTIONS__INV_LOGIT_HPP
3 
4 #include <boost/math/tools/promotion.hpp>
5 
6 namespace stan {
7 
8  namespace math {
9 
50  template <typename T>
51  inline typename boost::math::tools::promote_args<T>::type
52  inv_logit(const T a) {
53  using std::exp;
54  return 1.0 / (1.0 + exp(-a));
55  }
56 
57  }
58 }
59 
60 #endif
61 
stan::math::exp
Eigen::Matrix< T, Rows, Cols > exp(const Eigen::Matrix< T, Rows, Cols > &m)
Return the element-wise exponentiation of the matrix or vector.
Definition: exp.hpp:18
stan::math::inv_logit
boost::math::tools::promote_args< T >::type inv_logit(const T a)
Returns the inverse logit function applied to the argument.
Definition: inv_logit.hpp:52
stan::agrad::exp
fvar< T > exp(const fvar< T > &x)
Definition: exp.hpp:16
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