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dot.hpp
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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
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
stan
Definition: log_sum_exp.hpp:8
stan::math::dot
double dot(const std::vector< double > &x, const std::vector< double > &y)
Definition: dot.hpp:11

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