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exp2.hpp
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1 #ifndef STAN__AGRAD__FWD__FUNCTIONS__EXP2_HPP
2 #define STAN__AGRAD__FWD__FUNCTIONS__EXP2_HPP
3 
4 #include <stan/agrad/fwd/fvar.hpp>
5 #include <stan/meta/traits.hpp>
6 #include <stan/math/functions/exp2.hpp>
7 #include <stan/math/constants.hpp>
8 
9 namespace stan {
10 
11  namespace agrad {
12 
13  template <typename T>
14  inline
15  fvar<T>
16  exp2(const fvar<T>& x) {
17  using stan::math::exp2;
18  using std::log;
19  return fvar<T>(exp2(x.val_), x.d_ * exp2(x.val_) * stan::math::LOG_2);
20  }
21  }
22 }
23 #endif
stan::math::LOG_2
const double LOG_2
The natural logarithm of 2, .
Definition: constants.hpp:32
stan::agrad::exp2
fvar< T > exp2(const fvar< T > &x)
Definition: exp2.hpp:16
stan::math::exp2
boost::math::tools::promote_args< T >::type exp2(const T y)
Return the exponent base 2 of the specified argument (C99).
Definition: exp2.hpp:23
stan::agrad::log
fvar< T > log(const fvar< T > &x)
Definition: log.hpp:15
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