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reverse mode automatic differentiation
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stan
math
prim
scal
fun
corr_constrain.hpp
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#ifndef STAN_MATH_PRIM_SCAL_FUN_CORR_CONSTRAIN_HPP
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#define STAN_MATH_PRIM_SCAL_FUN_CORR_CONSTRAIN_HPP
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#include <
stan/math/prim/scal/fun/log1m.hpp
>
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#include <cmath>
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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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T
corr_constrain
(
const
T x) {
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return
tanh
(x);
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}
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template
<
typename
T>
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inline
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T
corr_constrain
(
const
T x, T& lp) {
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T tanh_x =
tanh
(x);
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lp +=
log1m
(tanh_x * tanh_x);
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return
tanh_x;
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}
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}
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}
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#endif
stan
Definition:
log_sum_exp.hpp:8
stan::math::tanh
fvar< T > tanh(const fvar< T > &x)
Definition:
tanh.hpp:12
log1m.hpp
stan::math::log1m
fvar< T > log1m(const fvar< T > &x)
Definition:
log1m.hpp:15
stan::math::corr_constrain
T corr_constrain(const T x)
Return the result of transforming the specified scalar to have a valid correlation value between -1 a...
Definition:
corr_constrain.hpp:24
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