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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
stan
Definition: log_sum_exp.hpp:8
stan::math::calculate_chain
double calculate_chain(const double &x, const double &val)
Definition: calculate_chain.hpp:8
stan::math::exp
fvar< T > exp(const fvar< T > &x)
Definition: exp.hpp:10

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