Stan Math Library
2.15.0
reverse mode automatic differentiation
stan
math
fwd
scal
fun
tanh.hpp
Go to the documentation of this file.
1
#ifndef STAN_MATH_FWD_SCAL_FUN_TANH_HPP
2
#define STAN_MATH_FWD_SCAL_FUN_TANH_HPP
3
4
#include <
stan/math/fwd/core.hpp
>
5
6
namespace
stan
{
7
namespace
math {
8
9
template
<
typename
T>
10
inline
11
fvar<T>
12
tanh
(
const
fvar<T>
& x) {
13
using
std::tanh
;
14
T u =
tanh
(x.
val_
);
15
return
fvar<T>
(u, x.
d_
* (1 - u * u));
16
}
17
}
18
}
19
#endif
core.hpp
stan::math::fvar::d_
T d_
Definition:
fvar.hpp:16
stan
Definition:
log_sum_exp.hpp:8
stan::math::fvar::val_
T val_
Definition:
fvar.hpp:15
stan::math::tanh
fvar< T > tanh(const fvar< T > &x)
Definition:
tanh.hpp:12
stan::math::tanh
var tanh(const var &a)
Return the hyperbolic tangent of the specified variable (cmath).
Definition:
tanh.hpp:50
stan::math::fvar
Definition:
fvar.hpp:14
[
Stan Home Page
]
© 2011–2016, Stan Development Team.