Stan Math Library  2.10.0
reverse mode automatic differentiation
calculate_chain.hpp
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1 #ifndef STAN_MATH_REV_SCAL_FUN_CALCULATE_CHAIN_HPP
2 #define STAN_MATH_REV_SCAL_FUN_CALCULATE_CHAIN_HPP
3 
4 #include <valarray>
5 
6 namespace stan {
7  namespace math {
8  inline double calculate_chain(const double& x, const double& val) {
9  return std::exp(x - val); // works out to inv_logit(x)
10  }
11  }
12 }
13 #endif
double calculate_chain(const double &x, const double &val)
fvar< T > exp(const fvar< T > &x)
Definition: exp.hpp:10

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