sum_type          348 modules/hal/include/opencv2/hal/intrin_cpp.hpp template<typename _Tp, int n> inline typename V_TypeTraits<_Tp>::sum_type v_reduce_sum(const v_reg<_Tp, n>& a)
sum_type          350 modules/hal/include/opencv2/hal/intrin_cpp.hpp     typename V_TypeTraits<_Tp>::sum_type c = a.s[0];