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to_fvar.hpp
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1 #ifndef STAN_MATH_FWD_MAT_FUN_TO_FVAR_HPP
2 #define STAN_MATH_FWD_MAT_FUN_TO_FVAR_HPP
3
4 #include <stan/math/prim/mat/fun/Eigen.hpp>
5 #include <stan/math/fwd/core.hpp>
6 #include <stan/math/fwd/scal/fun/to_fvar.hpp>
7 #include <stan/math/prim/mat/err/check_matching_dims.hpp>
8
9 namespace stan {
10 namespace math {
11
12 template<int R, int C, typename T>
13 inline
14 Eigen::Matrix<T, R, C>
15 to_fvar(const Eigen::Matrix<T, R, C>& m) {
16 return m;
17 }
18
19 template<int R, int C>
20 inline
21 Eigen::Matrix<fvar<double>, R, C>
22 to_fvar(const Eigen::Matrix<double, R, C>& m) {
23 Eigen::Matrix<fvar<double>, R, C> m_fd(m.rows(), m.cols());
24 for (int i = 0; i < m.size(); ++i)
25 m_fd(i) = m(i);
26 return m_fd;
27 }
28
29 template<typename T, int R, int C>
30 inline
31 Eigen::Matrix<fvar<T>, R, C>
32 to_fvar(const Eigen::Matrix<T, R, C>& val,
33 const Eigen::Matrix<T, R, C>& deriv) {
34 check_matching_dims("to_fvar",
35 "value", val,
36 "deriv", deriv);
37 Eigen::Matrix<fvar<T>, R, C> ret(val.rows(), val.cols());
38 for (int i = 0; i < val.rows(); i++) {
39 for (int j = 0; j < val.cols(); j++) {
40 ret(i, j).val_ = val(i, j);
41 ret(i, j).d_ = deriv(i, j);
42 }
43 }
44 return ret;
45 }
46
47 }
48 }
49 #endif
check_matching_dims.hpp
core.hpp
stan
Definition: log_sum_exp.hpp:8
stan::math::to_fvar
std::vector< fvar< T > > to_fvar(const std::vector< T > &v)
Definition: to_fvar.hpp:14
stan::math::check_matching_dims
bool check_matching_dims(const char *function, const char *name1, const Eigen::Matrix< T1, R1, C1 > &y1, const char *name2, const Eigen::Matrix< T2, R2, C2 > &y2)
Return true if the two matrices are of the same size.
Definition: check_matching_dims.hpp:37
Eigen.hpp
to_fvar.hpp

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