Stan Math Library  2.10.0
reverse mode automatic differentiation
operator_subtraction.hpp
Go to the documentation of this file.
1 #ifndef STAN_MATH_FWD_CORE_OPERATOR_SUBTRACTION_HPP
2 #define STAN_MATH_FWD_CORE_OPERATOR_SUBTRACTION_HPP
3 
5 
6 
7 namespace stan {
8 
9  namespace math {
10 
11  template <typename T>
12  inline
13  fvar<T>
14  operator-(const fvar<T>& x1, const fvar<T>& x2) {
15  return fvar<T>(x1.val_ - x2.val_, x1.d_ - x2.d_);
16  }
17 
18  template <typename T>
19  inline
20  fvar<T>
21  operator-(const double x1, const fvar<T>& x2) {
22  return fvar<T>(x1 - x2.val_, -x2.d_);
23  }
24 
25  template <typename T>
26  inline
27  fvar<T>
28  operator-(const fvar<T>& x1, const double x2) {
29  return fvar<T>(x1.val_ - x2, x1.d_);
30  }
31  }
32 }
33 #endif
fvar< T > operator-(const fvar< T > &x1, const fvar< T > &x2)

     [ Stan Home Page ] © 2011–2016, Stan Development Team.