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multiply_log.hpp
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#ifndef STAN_MATH_FWD_SCAL_FUN_MULTIPLY_LOG_HPP
#define STAN_MATH_FWD_SCAL_FUN_MULTIPLY_LOG_HPP
#include <stan/math/fwd/core.hpp>
#include <stan/math/prim/scal/fun/multiply_log.hpp>
namespace stan {
namespace math {
template <typename T>
inline
fvar<T>
multiply_log(const fvar<T>& x1, const fvar<T>& x2) {
using stan::math::multiply_log;
using std::log;
return fvar<T>(multiply_log(x1.val_, x2.val_),
x1.d_ * log(x2.val_) + x1.val_ * x2.d_ / x2.val_);
}
template <typename T>
inline
fvar<T>
multiply_log(const double x1, const fvar<T>& x2) {
using stan::math::multiply_log;
using std::log;
return fvar<T>(multiply_log(x1, x2.val_),
x1 * x2.d_ / x2.val_);
}
template <typename T>
inline
fvar<T>
multiply_log(const fvar<T>& x1, const double x2) {
using stan::math::multiply_log;
using std::log;
return fvar<T>(multiply_log(x1.val_, x2),
x1.d_ * log(x2));
}
}
}
#endif
core.hpp
stan::math::fvar::d_
T d_
Definition: fvar.hpp:15
stan::math::log
fvar< T > log(const fvar< T > &x)
Definition: log.hpp:15
multiply_log.hpp
stan::math::fvar::val_
T val_
Definition: fvar.hpp:14
stan::math::multiply_log
fvar< T > multiply_log(const fvar< T > &x1, const fvar< T > &x2)
Definition: multiply_log.hpp:15
stan::math::fvar
Definition: fvar.hpp:13

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