1 #ifndef STAN_MATH_FWD_MAT_FUNCTOR_JACOBIAN_HPP
2 #define STAN_MATH_FWD_MAT_FUNCTOR_JACOBIAN_HPP
14 template <
typename T,
typename F>
17 const Eigen::Matrix<T, Dynamic, 1>& x,
18 Eigen::Matrix<T, Dynamic, 1>& fx,
19 Eigen::Matrix<T, Dynamic, Dynamic>& J) {
22 Matrix<fvar<T>, Dynamic, 1> x_fvar(x.size());
23 for (
int i = 0; i < x.size(); ++i) {
24 for (
int k = 0; k < x.size(); ++k)
25 x_fvar(k) =
fvar<T>(x(k), i == k);
26 Matrix<fvar<T>, Dynamic, 1> fx_fvar
29 J.resize(x.size(), fx_fvar.size());
30 fx.resize(fx_fvar.size());
31 for (
int k = 0; k < fx_fvar.size(); ++k)
32 fx(k) = fx_fvar(k).
val_;
34 for (
int k = 0; k < fx_fvar.size(); ++k) {
35 J(i, k) = fx_fvar(k).
d_;
void jacobian(const F &f, const Eigen::Matrix< T, Dynamic, 1 > &x, Eigen::Matrix< T, Dynamic, 1 > &fx, Eigen::Matrix< T, Dynamic, Dynamic > &J)