1 #ifndef STAN_MATH_REV_SCAL_FUN_SQUARE_HPP
2 #define STAN_MATH_REV_SCAL_FUN_SQUARE_HPP
10 class square_vari :
public op_v_vari {
12 explicit square_vari(vari* avi) :
13 op_v_vari(avi->val_ * avi->val_, avi) {
16 avi_->adj_ += adj_ * 2.0 * avi_->val_;
47 return var(
new square_vari(x.
vi_));
Independent (input) and dependent (output) variables for gradients.
fvar< T > square(const fvar< T > &x)
vari * vi_
Pointer to the implementation of this variable.