1 #ifndef STAN_MATH_REV_SCAL_FUN_ACOSH_HPP 2 #define STAN_MATH_REV_SCAL_FUN_ACOSH_HPP
fvar< T > sqrt(const fvar< T > &x)
The variable implementation base class.
Independent (input) and dependent (output) variables for gradients.
const double val_
The value of this variable.
void chain()
Apply the chain rule to this variable based on the variables on which it depends. ...
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...
acosh_vari(double val, vari *avi)
fvar< T > acosh(const fvar< T > &x)
double val() const
Return the value of this variable.