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operator_multiplication.hpp
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1 #ifndef STAN_MATH_FWD_CORE_OPERATOR_MULTIPLICATION_HPP
2 #define STAN_MATH_FWD_CORE_OPERATOR_MULTIPLICATION_HPP
3
4 #include <stan/math/fwd/core/fvar.hpp>
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_,
16 x1.d_ * x2.val_ + x1.val_ * x2.d_);
17 }
18
19 template <typename T>
20 inline
21 fvar<T>
22 operator*(double x1, const fvar<T>& x2) {
23 return fvar<T>(x1 * x2.val_, x1 * x2.d_);
24 }
25
26 template <typename T>
27 inline
28 fvar<T>
29 operator*(const fvar<T>& x1, double x2) {
30 return fvar<T>(x1.val_ * x2, x1.d_ * x2);
31 }
32 }
33 }
34 #endif
stan::math::fvar::d_
T d_
Definition: fvar.hpp:15
stan
Definition: log_sum_exp.hpp:8
stan::math::fvar::val_
T val_
Definition: fvar.hpp:14
fvar.hpp
stan::math::operator*
fvar< T > operator*(const fvar< T > &x1, const fvar< T > &x2)
Definition: operator_multiplication.hpp:14
stan::math::fvar
Definition: fvar.hpp:13

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