- // all terms in the sum should have the same indices (compatible tensors)
- // however this is not checked, since there is no function yet which
- // compares indices (idxvector can be unsorted) !!!!!!!!!!!
+ // FIXME: all terms in the sum should have the same indices (compatible
+ // tensors) however this is not checked, since there is no function yet
+ // which compares indices (idxvector can be unsorted)