1 #ifndef STAN_MATH_REV_SCAL_FUN_INV_SQRT_HPP 2 #define STAN_MATH_REV_SCAL_FUN_INV_SQRT_HPP
fvar< T > inv_sqrt(const fvar< T > &x)
fvar< T > sqrt(const fvar< T > &x)
The variable implementation base class.
void chain()
Apply the chain rule to this variable based on the variables on which it depends. ...
Independent (input) and dependent (output) variables for gradients.
const double val_
The value of this variable.
vari * vi_
Pointer to the implementation of this variable.
double adj_
The adjoint of this variable, which is the partial derivative of this variable with respect to the ro...