1 #ifndef STAN_MATH_REV_SCAL_FUN_LOG1P_HPP
2 #define STAN_MATH_REV_SCAL_FUN_LOG1P_HPP
13 class log1p_vari :
public op_v_vari {
15 explicit log1p_vari(vari* avi) :
16 op_v_vari(stan::math::
log1p(avi->val_), avi) {
19 avi_->adj_ += adj_ / (1 + avi_->val_);
35 return var(
new log1p_vari(a.
vi_));
Independent (input) and dependent (output) variables for gradients.
vari * vi_
Pointer to the implementation of this variable.
fvar< T > log1p(const fvar< T > &x)