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expm1.hpp
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1 #ifndef STAN_MATH_FWD_SCAL_FUN_EXPM1_HPP
2 #define STAN_MATH_FWD_SCAL_FUN_EXPM1_HPP
3
4 #include <math.h>
5 #include <stan/math/fwd/core.hpp>
6 #include <cmath>
7
8 namespace stan {
9 namespace math {
10
11 template <typename T>
12 inline fvar<T> expm1(const fvar<T>& x) {
13 using std::exp;
14 using ::expm1;
15 return fvar<T>(expm1(x.val_), x.d_ * exp(x.val_));
16 }
17
18 }
19 }
20 #endif
core.hpp
stan::math::fvar::d_
T d_
Definition: fvar.hpp:14
stan
Definition: log_sum_exp.hpp:8
stan::math::expm1
fvar< T > expm1(const fvar< T > &x)
Definition: expm1.hpp:12
stan::math::fvar::val_
T val_
Definition: fvar.hpp:13
stan::math::exp
fvar< T > exp(const fvar< T > &x)
Definition: exp.hpp:10
stan::math::expm1
var expm1(const var &a)
The exponentiation of the specified variable minus 1 (C99).
Definition: expm1.hpp:57
stan::math::fvar
Definition: fvar.hpp:12

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