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sum.hpp
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1 #ifndef STAN_MATH_PRIM_ARR_FUN_SUM_HPP
2 #define STAN_MATH_PRIM_ARR_FUN_SUM_HPP
3
4 #include <cstddef>
5 #include <vector>
6
7 namespace stan {
8 namespace math {
9
17 template <typename T>
18 inline T sum(const std::vector<T>& xs) {
19 if (xs.size() == 0) return 0;
20 T sum(xs[0]);
21 for (size_t i = 1; i < xs.size(); ++i)
22 sum += xs[i];
23 return sum;
24 }
25
26 }
27 }
28 #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

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