1 #ifndef STAN_MATH_FWD_SCAL_FUN_LOG1P_HPP 2 #define STAN_MATH_FWD_SCAL_FUN_LOG1P_HPP 3 4 #include <stan/math/fwd/core.hpp> 5 #include <stan/math/prim/scal/fun/log1p.hpp> 6 7 namespace stan { 8 namespace math { 9 10 template <typename T> log1p(const fvar<T> & x)11inline fvar<T> log1p(const fvar<T>& x) { 12 return fvar<T>(log1p(x.val_), x.d_ / (1 + x.val_)); 13 } 14 15 } // namespace math 16 } // namespace stan 17 #endif 18