1 #ifndef STAN_MATH_REV_SCAL_FUN_INV_LOGIT_HPP
2 #define STAN_MATH_REV_SCAL_FUN_INV_LOGIT_HPP
11 class inv_logit_vari :
public op_v_vari {
13 explicit inv_logit_vari(vari* avi) :
14 op_v_vari(stan::math::
inv_logit(avi->val_), avi) {
17 avi_->adj_ += adj_ * val_ * (1.0 - val_);
35 return var(
new inv_logit_vari(a.
vi_));
fvar< T > inv_logit(const fvar< T > &x)
Independent (input) and dependent (output) variables for gradients.
vari * vi_
Pointer to the implementation of this variable.