vec_diff()

vec Ring::vec_diff	(	vec	v,
		int	rankFw,
		vec	w,
		int	use_coeff ) const

Definition at line 714 of file ring-vecs.cpp.

{
  vec result = nullptr;
  for (; v != nullptr; v = v->next)
    for (vecterm *p = w; p != nullptr; p = p->next)
      {
        ring_elem a = diff(v->coeff, p->coeff, use_coeff);
        if (is_zero(a))
          {
            remove(a);
            continue;
          }
        vecterm *t = new_vec();
        t->comp = rankFw * v->comp + p->comp;
        t->coeff = a;
        t->next = result;
        result = t;
      }
  vec_sort(result);
  return result;
}

References vec::coeff, vec::comp, diff(), is_zero(), new_vec(), vec::next, p, remove(), result(), and vec_sort().

Referenced by Matrix::diff().