Class Number

Singular/dyn_modules/python/Number.h:33–219

//class TrivialErrorHandler;
class Vector;
class Number
{
 public:
  friend Number operator+(const Number& n1, const Number& n2);
  friend Number operator-(const Number& n1, const Number& n2);
  friend Number operator/(const Number& n1, const Number& n2);
  friend Number operator*(const Number& n1, const Number& n2);
  friend bool operator==(const Number& n1, const Number& n2);
  friend Number operator+(const Number& n1, int n2);
  friend Number operator-(const Number& n1, int n2);
  friend Number operator/(const Number& n1, int n2);
  friend Number operator*(const Number& n1, int n2);
  friend bool operator==(const Number& n1, int n2);
  friend Number operator+(int n1, const Number& n2);
  friend Number operator-(int n1, const Number& n2);
  friend Number operator/(int n1, const Number& n2);
  friend Number operator*(int n1, const Number& n2);
  friend bool operator==(int n1, const Number& n2);
  friend class Poly;
  friend class Vector;
  //friend class PolyBase<POLY_VARIANT_RING,Poly,TrivialErrorHandler>;
//   friend class PolyBase <poly_variant variant,
//   class create_type_input,
//   class error_handle_traits>;
   template <poly_variant,class,class> friend class PolyBase;
  friend class PolyImpl;
  number as_number() const
  {
    return n_Copy(n,r.get()->cf);
  }
  Number& operator=(const Number& n2)
  {
    //durch Reihenfolge Selbstzuweisungen ber�cksichtigt
    number nc=n_Copy(n2.n,n2.r.get()->cf);
    n_Delete(&n,r.get()->cf);
    r=n2.r;
    n=nc;
    return *this;
  }
  Number operator-()
  {
    Number t(*this);
    //t.n=n_Copy(n,r);
    t.n=n_InpNeg(t.n,r.get()->cf);
    return t;
  }
  Number& operator+=(const Number & n2)
  {
    if (r!=n2.r)
    {
      WerrorS("not the same ring");
      return *this;
    }
    number nv=n_Add(n,n2.n,r.get()->cf);
    n_Delete(&n,r.get()->cf);
    n=nv;
    return *this;
  }