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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
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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