1 #ifndef STAN_MATH_REV_SCAL_FUN_LOG1P_EXP_HPP
2 #define STAN_MATH_REV_SCAL_FUN_LOG1P_EXP_HPP
12 class log1p_exp_v_vari :
public op_v_vari {
14 explicit log1p_exp_v_vari(vari* avi) :
29 return var(
new log1p_exp_v_vari(a.
vi_));
Independent (input) and dependent (output) variables for gradients.
vari * vi_
Pointer to the implementation of this variable.
fvar< T > log1p_exp(const fvar< T > &x)
double calculate_chain(double x, double val)