return this->hold();
}
-exvector add::get_indices(void) const
-{
- // 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)
- if (seq.size()==0) {
- return exvector();
- }
- return (seq.begin())->rest.get_indices();
-}
-
ex add::simplify_ncmul(const exvector & v) const
{
if (seq.size()==0) {