template<class T>
complex<T> operator-(const complex<T>& lhs, const complex<T>& rhs);
template<class T>
complex<T> operator-(const complex<T>& lhs, const T& rhs);
template<class T>
complex<T> operator-(const T& lhs, const complex<T>& rhs);
template<class T>
complex<T> operator-(const complex<T>& lhs);
The binary operators each convert both operands to the return type, then return the complex difference of the
converted lhs
and rhs
.
The unary operator returns a value whose real part is -
real
(lhs)
and whose imaginary part is -
imag
(lhs)
.