1 #ifndef STAN_MATH_REV_CORE_OPERATOR_PLUS_EQUAL_HPP
2 #define STAN_MATH_REV_CORE_OPERATOR_PLUS_EQUAL_HPP
18 vi_ =
new add_vd_vari(
vi_, b);
var & operator+=(const var &b)
The compound add/assignment operator for variables (C++).
Independent (input) and dependent (output) variables for gradients.
vari * vi_
Pointer to the implementation of this variable.