Stan Math Library  2.10.0
reverse mode automatic differentiation
columns_dot_product.hpp
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1 #ifndef STAN_MATH_PRIM_MAT_FUN_COLUMNS_DOT_PRODUCT_HPP
2 #define STAN_MATH_PRIM_MAT_FUN_COLUMNS_DOT_PRODUCT_HPP
3 
7 
8 namespace stan {
9  namespace math {
10 
20  template<int R1, int C1, int R2, int C2>
21  inline Eigen::Matrix<double, 1, C1>
22  columns_dot_product(const Eigen::Matrix<double, R1, C1>& v1,
23  const Eigen::Matrix<double, R2, C2>& v2) {
24  stan::math::check_matching_sizes("columns_dot_product",
25  "v1", v1,
26  "v2", v2);
27  Eigen::Matrix<double, 1, C1> ret(1, v1.cols());
28  for (size_type j = 0; j < v1.cols(); ++j) {
29  ret(j) = v1.col(j).dot(v2.col(j));
30  }
31  return ret;
32  }
33 
34  }
35 }
36 #endif
Eigen::Matrix< fvar< T >, 1, C1 > columns_dot_product(const Eigen::Matrix< fvar< T >, R1, C1 > &v1, const Eigen::Matrix< fvar< T >, R2, C2 > &v2)
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
bool check_matching_sizes(const char *function, const char *name1, const T_y1 &y1, const char *name2, const T_y2 &y2)
Return true if two structures at the same size.

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