1 #ifndef STAN_MATH_FWD_SCAL_FUN_ATAN2_HPP 2 #define STAN_MATH_FWD_SCAL_FUN_ATAN2_HPP
T d_
The tangent (derivative) of this variable.
fvar< T > atan2(const fvar< T > &x1, const fvar< T > &x2)
fvar< T > square(const fvar< T > &x)
T val_
The value of this variable.
var atan2(double a, const var &b)
Return the principal value of the arc tangent, in radians, of the first scalar divided by the second ...
This template class represents scalars used in forward-mode automatic differentiation, which consist of values and directional derivatives of the specified template type.