Function n2Copy

Singular/number2.cc:449–463

----------------------------------------------------------- operations with Number/number2 -----------------------------------------------------------

// operations with Number/number2
// -----------------------------------------------------------
number2 n2Copy(const number2 d)
{
  number2 r=NULL;
  if ((d!=NULL)&&(d->cf!=NULL))
  {
    r=(number2)omAlloc(sizeof(*r));
    d->cf->ref++;
    r->cf=d->cf;
    if (d->cf!=NULL)
      r->n=n_Copy(d->n,d->cf);
    else
      r->n=NULL;
  }
  return r;
}
void n2Delete(number2 &d)
{
  if (d!=NULL)