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columns_dot_self.hpp
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1 #ifndef STAN_MATH_FWD_MAT_FUN_COLUMNS_DOT_SELF_HPP
2 #define STAN_MATH_FWD_MAT_FUN_COLUMNS_DOT_SELF_HPP
3
4 #include <stan/math/prim/mat/fun/Eigen.hpp>
5 #include <stan/math/prim/mat/fun/typedefs.hpp>
6 #include <stan/math/fwd/core.hpp>
7 #include <stan/math/fwd/mat/fun/dot_self.hpp>
8 #include <vector>
9
10 namespace stan {
11 namespace math {
12
13 template<typename T, int R, int C>
14 inline Eigen::Matrix<fvar<T>, 1, C>
15 columns_dot_self(const Eigen::Matrix<fvar<T>, R, C>& x) {
16 Eigen::Matrix<fvar<T>, 1, C> ret(1, x.cols());
17 for (size_type i = 0; i < x.cols(); i++) {
18 Eigen::Matrix<fvar<T>, R, 1> ccol = x.col(i);
19 ret(0, i) = dot_self(ccol);
20 }
21 return ret;
22 }
23 }
24 }
25 #endif
core.hpp
stan::math::dot_self
fvar< T > dot_self(const Eigen::Matrix< fvar< T >, R, C > &v)
Definition: dot_self.hpp:16
stan::math::size_type
Eigen::Matrix< double, Eigen::Dynamic, Eigen::Dynamic >::Index size_type
Type for sizes and indexes in an Eigen matrix with double e.
Definition: typedefs.hpp:13
dot_self.hpp
Eigen.hpp
stan::math::columns_dot_self
Eigen::Matrix< fvar< T >, 1, C > columns_dot_self(const Eigen::Matrix< fvar< T >, R, C > &x)
Definition: columns_dot_self.hpp:15
stan::math::fvar
Definition: fvar.hpp:13
typedefs.hpp

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