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