| 456 | */ |
| 457 | template<typename Derived> |
| 458 | EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE typename internal::traits<Derived>::Scalar |
| 459 | DenseBase<Derived>::sum() const |
| 460 | { |
| 461 | if(SizeAtCompileTime==0 || (SizeAtCompileTime==Dynamic && size()==0)) |
| 462 | return Scalar(0); |
| 463 | return derived().redux(Eigen::internal::scalar_sum_op<Scalar,Scalar>()); |
| 464 | } |
| 465 | |
| 466 | /** \returns the mean of all coefficients of *this |
| 467 | * |