Stan Math Library  2.9.0
reverse mode automatic differentiation
operator_addition.hpp
Go to the documentation of this file.
1 #ifndef STAN_MATH_FWD_CORE_OPERATOR_ADDITION_HPP
2 #define STAN_MATH_FWD_CORE_OPERATOR_ADDITION_HPP
3 
5 
6 namespace stan {
7 
8  namespace math {
9 
10  template <typename T>
11  inline
12  fvar<T>
13  operator+(const fvar<T>& x1, const fvar<T>& x2) {
14  return fvar<T>(x1.val_ + x2.val_, x1.d_ + x2.d_);
15  }
16 
17  template <typename T>
18  inline
19  fvar<T>
20  operator+(const double x1, const fvar<T>& x2) {
21  return fvar<T>(x1 + x2.val_, x2.d_);
22  }
23 
24  template <typename T>
25  inline
26  fvar<T>
27  operator+(const fvar<T>& x1, const double x2) {
28  return fvar<T>(x1.val_ + x2, x1.d_);
29  }
30  }
31 }
32 #endif
fvar< T > operator+(const fvar< T > &x1, const fvar< T > &x2)

     [ Stan Home Page ] © 2011–2015, Stan Development Team.