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fdim.hpp
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#ifndef STAN_MATH_FWD_SCAL_FUN_FDIM_HPP
#define STAN_MATH_FWD_SCAL_FUN_FDIM_HPP
#include <stan/math/fwd/core.hpp>
#include <stan/math/prim/scal/fun/fdim.hpp>
namespace stan {
namespace math {
template <typename T>
inline fvar<T> fdim(const fvar<T>& x1, const fvar<T>& x2) {
using stan::math::fdim;
using std::floor;
if (x1.val_ < x2.val_)
return fvar<T>(fdim(x1.val_, x2.val_), 0);
else
return fvar<T>(fdim(x1.val_, x2.val_),
x1.d_ - x2.d_ * floor(x1.val_ / x2.val_));
}
template <typename T>
inline fvar<T> fdim(const fvar<T>& x1, const double x2) {
using stan::math::fdim;
using std::floor;
if (x1.val_ < x2)
return fvar<T>(fdim(x1.val_, x2), 0);
else
return fvar<T>(fdim(x1.val_, x2), x1.d_);
}
template <typename T>
inline fvar<T> fdim(const double x1, const fvar<T>& x2) {
using stan::math::fdim;
using std::floor;
if (x1 < x2.val_)
return fvar<T>(fdim(x1, x2.val_), 0);
else
return fvar<T>(fdim(x1, x2.val_), x2.d_ * -floor(x1 / x2.val_));
}
}
}
#endif
core.hpp
stan::math::fvar::d_
T d_
Definition: fvar.hpp:15
stan::math::fvar::val_
T val_
Definition: fvar.hpp:14
stan::math::fdim
fvar< T > fdim(const fvar< T > &x1, const fvar< T > &x2)
Definition: fdim.hpp:11
stan::math::floor
fvar< T > floor(const fvar< T > &x)
Definition: floor.hpp:11
stan::math::fvar
Definition: fvar.hpp:13
fdim.hpp

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