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operator_division.hpp
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1 #ifndef STAN_MATH_FWD_CORE_OPERATOR_DIVISION_HPP
2 #define STAN_MATH_FWD_CORE_OPERATOR_DIVISION_HPP
3
4 #include <stan/math/fwd/core/fvar.hpp>
5
6 namespace stan {
7 namespace math {
8
9 template <typename T>
10 inline
11 fvar<T>
12 operator/(const fvar<T>& x1, const fvar<T>& x2) {
13 return fvar<T>(x1.val_ / x2.val_,
14 (x1.d_ * x2.val_ - x1.val_ * x2.d_) / (x2.val_ * x2.val_));
15 }
16
17 template <typename T>
18 inline
19 fvar<T>
20 operator/(const fvar<T>& x1, const double x2) {
21 return fvar<T>(x1.val_ / x2,
22 x1.d_ / x2);
23 }
24
25 template <typename T>
26 inline
27 fvar<T>
28 operator/(const double x1, const fvar<T>& x2) {
29 return fvar<T>(x1 / x2.val_,
30 - x1 * x2.d_ / (x2.val_ * x2.val_));
31 }
32 }
33 }
34 #endif
stan::math::operator/
fvar< T > operator/(const fvar< T > &x1, const fvar< T > &x2)
Definition: operator_division.hpp:12
stan::math::fvar::d_
T d_
Definition: fvar.hpp:14
stan
Definition: log_sum_exp.hpp:8
stan::math::fvar::val_
T val_
Definition: fvar.hpp:13
fvar.hpp
stan::math::fvar
Definition: fvar.hpp:12

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