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sum.hpp
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1 #ifndef STAN_MATH_FWD_MAT_FUN_SUM_HPP
2 #define STAN_MATH_FWD_MAT_FUN_SUM_HPP
3
4 #include <stan/math/fwd/core.hpp>
5 #include <stan/math/prim/mat/fun/Eigen.hpp>
6 #include <stan/math/prim/mat/fun/sum.hpp>
7
8 namespace stan {
9 namespace math {
10
20 template <typename T, int R, int C>
21 inline fvar<T> sum(const Eigen::Matrix<fvar<T>, R, C>& m) {
22 if (m.size() == 0)
23 return 0.0;
24 Eigen::Matrix<T, Eigen::Dynamic, 1> vals(m.size());
25 Eigen::Matrix<T, Eigen::Dynamic, 1> tans(m.size());
26 for (int i = 0; i < m.size(); ++i) {
27 vals(i) = m(i).val();
28 tans(i) = m(i).tangent();
29 }
30 return fvar<T>(sum(vals), sum(tans));
31 }
32
33 }
34 }
35 #endif
stan::math::sum
fvar< T > sum(const std::vector< fvar< T > > &m)
Return the sum of the entries of the specified standard vector.
Definition: sum.hpp:20
core.hpp
stan
Definition: log_sum_exp.hpp:8
Eigen.hpp
sum.hpp
stan::math::fvar
Definition: fvar.hpp:12

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