1 #ifndef STAN_MATH_FWD_SCAL_FUN_LOG_DIFF_EXP_HPP
2 #define STAN_MATH_FWD_SCAL_FUN_LOG_DIFF_EXP_HPP
12 template <
typename T>
inline fvar<T>
22 template <
typename T1,
typename T2>
inline fvar<T2>
31 template <
typename T1,
typename T2>
inline fvar<T1>
const double NOT_A_NUMBER
(Quiet) not-a-number value.
fvar< T > log_diff_exp(const fvar< T > &x1, const fvar< T > &x2)
fvar< T > exp(const fvar< T > &x)