Stan Math Library  2.20.0
reverse mode automatic differentiation
calculate_chain.hpp
Go to the documentation of this file.
1 #ifndef STAN_MATH_REV_SCAL_FUN_CALCULATE_CHAIN_HPP
2 #define STAN_MATH_REV_SCAL_FUN_CALCULATE_CHAIN_HPP
3 
4 #include <stan/math/rev/meta.hpp>
5 #include <cmath>
6 
7 namespace stan {
8 namespace math {
9 
10 inline double calculate_chain(double x, double val) {
11  return std::exp(x - val); // works out to inv_logit(x)
12 }
13 
14 } // namespace math
15 } // namespace stan
16 #endif
fvar< T > exp(const fvar< T > &x)
Definition: exp.hpp:11
double calculate_chain(double x, double val)

     [ Stan Home Page ] © 2011–2018, Stan Development Team.