1 #ifndef STAN_MATH_REV_SCAL_FUN_INV_HPP
2 #define STAN_MATH_REV_SCAL_FUN_INV_HPP
12 class inv_vari :
public op_v_vari {
14 explicit inv_vari(vari* avi) :
15 op_v_vari(stan::math::
inv(avi->val_), avi) {
18 avi_->adj_ -= adj_ / (avi_->val_ * avi_->val_);
43 return var(
new inv_vari(a.
vi_));
Independent (input) and dependent (output) variables for gradients.
vari * vi_
Pointer to the implementation of this variable.
fvar< T > inv(const fvar< T > &x)