Stan Math Library  2.9.0
reverse mode automatic differentiation
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;
15  return fvar<T>(expm1(x.val_), x.d_ * exp(x.val_));
16  }
17 
18  }
19 }
20 #endif
var expm1(const stan::math::var &a)
The exponentiation of the specified variable minus 1 (C99).
Definition: expm1.hpp:57
fvar< T > expm1(const fvar< T > &x)
Definition: expm1.hpp:12
fvar< T > exp(const fvar< T > &x)
Definition: exp.hpp:10

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