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reverse mode automatic differentiation
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stan
math
fwd
core
operator_subtraction.hpp
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#ifndef STAN_MATH_FWD_CORE_OPERATOR_SUBTRACTION_HPP
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#define STAN_MATH_FWD_CORE_OPERATOR_SUBTRACTION_HPP
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#include <
stan/math/fwd/core/fvar.hpp
>
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namespace
stan
{
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namespace
math {
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template
<
typename
T>
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inline
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fvar<T>
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operator-
(
const
fvar<T>
& x1,
const
fvar<T>
& x2) {
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return
fvar<T>
(x1.
val_
- x2.
val_
, x1.
d_
- x2.
d_
);
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}
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template
<
typename
T>
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inline
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fvar<T>
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operator-
(
const
double
x1,
const
fvar<T>
& x2) {
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return
fvar<T>
(x1 - x2.
val_
, -x2.
d_
);
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}
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template
<
typename
T>
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inline
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fvar<T>
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operator-
(
const
fvar<T>
& x1,
const
double
x2) {
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return
fvar<T>
(x1.
val_
- x2, x1.
d_
);
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}
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}
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}
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#endif
stan::math::operator-
fvar< T > operator-(const fvar< T > &x1, const fvar< T > &x2)
Definition:
operator_subtraction.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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