Stan Math Library
2.15.0
reverse mode automatic differentiation
stan
math
fwd
scal
fun
inv_logit.hpp
Go to the documentation of this file.
1
#ifndef STAN_MATH_FWD_SCAL_FUN_INV_LOGIT_HPP
2
#define STAN_MATH_FWD_SCAL_FUN_INV_LOGIT_HPP
3
4
#include <
stan/math/fwd/core.hpp
>
5
6
#include <
stan/math/prim/scal/fun/inv_logit.hpp
>
7
8
namespace
stan
{
9
namespace
math {
10
19
template
<
typename
T>
20
inline
fvar<T>
inv_logit
(
const
fvar<T>
& x) {
21
using
std::exp
;
22
using
std::pow
;
23
return
fvar<T>
(
inv_logit
(x.
val_
),
24
x.
d_
*
inv_logit
(x.
val_
) * (1 -
inv_logit
(x.
val_
)));
25
}
26
}
27
}
28
#endif
core.hpp
stan::math::fvar::d_
T d_
Definition:
fvar.hpp:16
stan
Definition:
log_sum_exp.hpp:8
stan::math::inv_logit
fvar< T > inv_logit(const fvar< T > &x)
Returns the inverse logit function applied to the argument.
Definition:
inv_logit.hpp:20
stan::math::fvar::val_
T val_
Definition:
fvar.hpp:15
stan::math::exp
fvar< T > exp(const fvar< T > &x)
Definition:
exp.hpp:10
stan::math::pow
fvar< T > pow(const fvar< T > &x1, const fvar< T > &x2)
Definition:
pow.hpp:17
inv_logit.hpp
stan::math::fvar
Definition:
fvar.hpp:14
[
Stan Home Page
]
© 2011–2016, Stan Development Team.