18     Complex z1{0, 1};  in complex_number_examples()  local
21     std::cout << "Print a complex number: " << z1 << std::endl;  in complex_number_examples()
22     std::cout << "Square it             : " << z1*z1 << std::endl;  in complex_number_examples()
23     std::cout << "Real part             : " << z1.real() << " = " << real(z1) << std::endl;  in complex_number_examples()
24     std::cout << "Imaginary part        : " << z1.imag() << " = " << imag(z1) << std::endl;  in complex_number_examples()
26     std::cout << "Absolute value        : " << abs(z1) << std::endl;  in complex_number_examples()
27     std::cout << "Argument              : " << arg(z1) << std::endl;  in complex_number_examples()
28     std::cout << "Norm                  : " << norm(z1) << std::endl;  in complex_number_examples()
29     std::cout << "Complex conjugate     : " << conj(z1) << std::endl;  in complex_number_examples()
30     std::cout << "Projection onto Riemann sphere: " <<  proj(z1) << std::endl;  in complex_number_examples()
39     std::cout << "exp(z1) = " << exp(z1) << std::endl;  in complex_number_examples()
41     std::cout << "log(z1) = " << log(z1) << std::endl;  in complex_number_examples()
43     std::cout << "log10(z1) = " << log10(z1) << std::endl;  in complex_number_examples()
45     std::cout << "pow(z1, z1) = " << pow(z1, z1) << std::endl;  in complex_number_examples()
47     std::cout << "Take its square root  : " << sqrt(z1) << std::endl;  in complex_number_examples()
49     std::cout << "sin(z1) = " << sin(z1) << std::endl;  in complex_number_examples()
51     std::cout << "cos(z1) = " << cos(z1) << std::endl;  in complex_number_examples()
53     std::cout << "tan(z1) = " << tan(z1) << std::endl;  in complex_number_examples()
55     std::cout << "asin(z1) = " << asin(z1) << std::endl;  in complex_number_examples()
57     std::cout << "acos(z1) = " << acos(z1) << std::endl;  in complex_number_examples()
59     std::cout << "atan(z1) = " << atan(z1) << std::endl;  in complex_number_examples()
61     std::cout << "sinh(z1) = " << sinh(z1) << std::endl;  in complex_number_examples()
63     std::cout << "cosh(z1) = " << cosh(z1) << std::endl;  in complex_number_examples()
65     std::cout << "tanh(z1) = " << tanh(z1) << std::endl;  in complex_number_examples()
67     std::cout << "asinh(z1) = " << asinh(z1) << std::endl;  in complex_number_examples()
69     std::cout << "acosh(z1) = " << acosh(z1) << std::endl;  in complex_number_examples()
71     std::cout << "atanh(z1) = " << atanh(z1) << std::endl;  in complex_number_examples()