19     std::cout << std::setprecision(std::numeric_limits<typename Complex::value_type>::digits10);  in complex_number_examples()
20     std::cout << std::scientific << std::fixed;  in complex_number_examples()
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()
25     using std::abs;  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()
33     using std::polar;  in complex_number_examples()
34     std::cout << "Polar coordinates (phase = 0)    : " << polar(r) << std::endl;  in complex_number_examples()
35     std::cout << "Polar coordinates (phase !=0)    : " << polar(r, theta) << std::endl;  in complex_number_examples()
37     std::cout << "\nElementary special functions:\n";  in complex_number_examples()
38     using std::exp;  in complex_number_examples()
39     std::cout << "exp(z1) = " << exp(z1) << std::endl;  in complex_number_examples()
40     using std::log;  in complex_number_examples()
41     std::cout << "log(z1) = " << log(z1) << std::endl;  in complex_number_examples()
42     using std::log10;  in complex_number_examples()
43     std::cout << "log10(z1) = " << log10(z1) << std::endl;  in complex_number_examples()
44     using std::pow;  in complex_number_examples()
45     std::cout << "pow(z1, z1) = " << pow(z1, z1) << std::endl;  in complex_number_examples()
46     using std::sqrt;  in complex_number_examples()
47     std::cout << "Take its square root  : " << sqrt(z1) << std::endl;  in complex_number_examples()
48     using std::sin;  in complex_number_examples()
49     std::cout << "sin(z1) = " << sin(z1) << std::endl;  in complex_number_examples()
50     using std::cos;  in complex_number_examples()
51     std::cout << "cos(z1) = " << cos(z1) << std::endl;  in complex_number_examples()
52     using std::tan;  in complex_number_examples()
53     std::cout << "tan(z1) = " << tan(z1) << std::endl;  in complex_number_examples()
54     using std::asin;  in complex_number_examples()
55     std::cout << "asin(z1) = " << asin(z1) << std::endl;  in complex_number_examples()
56     using std::acos;  in complex_number_examples()
57     std::cout << "acos(z1) = " << acos(z1) << std::endl;  in complex_number_examples()
58     using std::atan;  in complex_number_examples()
59     std::cout << "atan(z1) = " << atan(z1) << std::endl;  in complex_number_examples()
60     using std::sinh;  in complex_number_examples()
61     std::cout << "sinh(z1) = " << sinh(z1) << std::endl;  in complex_number_examples()
62     using std::cosh;  in complex_number_examples()
63     std::cout << "cosh(z1) = " << cosh(z1) << std::endl;  in complex_number_examples()
64     using std::tanh;  in complex_number_examples()
65     std::cout << "tanh(z1) = " << tanh(z1) << std::endl;  in complex_number_examples()
66     using std::asinh;  in complex_number_examples()
67     std::cout << "asinh(z1) = " << asinh(z1) << std::endl;  in complex_number_examples()
68     using std::acosh;  in complex_number_examples()
69     std::cout << "acosh(z1) = " << acosh(z1) << std::endl;  in complex_number_examples()
70     using std::atanh;  in complex_number_examples()
71     std::cout << "atanh(z1) = " << atanh(z1) << std::endl;  in complex_number_examples()
76     std::cout << "First, some operations we usually perform with std::complex:\n";  in main()
77     complex_number_examples<std::complex<double>>();  in main()
78     std::cout << "\nNow the same operations performed using quad precision complex numbers:\n";  in main()