Stan Math Library  2.12.0
reverse mode automatic differentiation
exp2.hpp
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1 #ifndef STAN_MATH_FWD_SCAL_FUN_EXP2_HPP
2 #define STAN_MATH_FWD_SCAL_FUN_EXP2_HPP
3 
4 #include <stan/math/fwd/core.hpp>
7 #include <cmath>
8 
9 namespace stan {
10  namespace math {
11 
12  template <typename T>
13  inline fvar<T>
14  exp2(const fvar<T>& x) {
15  using std::log;
16  return fvar<T>(exp2(x.val_), x.d_ * exp2(x.val_) * LOG_2);
17  }
18 
19  }
20 }
21 #endif
const double LOG_2
The natural logarithm of 2, .
Definition: constants.hpp:32
fvar< T > log(const fvar< T > &x)
Definition: log.hpp:14
fvar< T > exp2(const fvar< T > &x)
Definition: exp2.hpp:14

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