Stan Math Library  2.11.0
reverse mode automatic differentiation
dot.hpp
Go to the documentation of this file.
1 #ifndef STAN_MATH_PRIM_ARR_FUN_DOT_HPP
2 #define STAN_MATH_PRIM_ARR_FUN_DOT_HPP
3 
4 #include <vector>
5 #include <cstddef>
6 
7 namespace stan {
8  namespace math {
9 
10  // x' * y
11  inline double dot(const std::vector<double>& x,
12  const std::vector<double>& y) {
13  double sum = 0.0;
14  for (size_t i = 0; i < x.size(); ++i)
15  sum += x[i] * y[i];
16  return sum;
17  }
18 
19  }
20 }
21 
22 #endif
fvar< T > sum(const std::vector< fvar< T > > &m)
Return the sum of the entries of the specified standard vector.
Definition: sum.hpp:20
double dot(const std::vector< double > &x, const std::vector< double > &y)
Definition: dot.hpp:11

     [ Stan Home Page ] © 2011–2016, Stan Development Team.