ComplexD class overview
the ComplexD class represents complex numbers and defines mathematical
manipulations with complex numbers. The real and imaginary parts are
are double type.
ComplexD number;
number.re() = 1;
number.im() = 2;
cout << number; -> (1, 2)
number[0] = 4;
cout << number; -> (4, 2)
cout << number/2 -> (2, 1)