Offset direction () const;
Offset swapped () const;
- Real arg () const;
Real angle_degrees () const;
Real length () const;
bool is_sane () const;
IMPLEMENT_ARITHMETIC_OPERATOR (Offset, *);
Offset complex_multiply (Offset, Offset);
-Offset complex_divide (Offset, Offset);
-Offset complex_exp (Offset);
+Offset offset_directed (Real);
inline Offset
Offset::operator *= (Offset z2)