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107 lines
6.1 KiB
C++
107 lines
6.1 KiB
C++
///////////////////////////////////////////////////////////////
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// Copyright 2018 - 2025 Nick Thompson.
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// Copyright 2025 John Maddock.
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// Copyright 2025 Christopher Kormanyos.
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// Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
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/*`This example demonstrates the usage of the complex_adaptor backend for multiprecision complex numbers.
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In the following, we will show how using the complex_adaptor backend together with number allows for the same operations as the C++ standard library complex numbers.
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*/
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//[cpp_complex_eg
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#include <iostream>
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#include <complex>
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#include <boost/multiprecision/cpp_complex.hpp>
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template<class Complex>
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void complex_number_examples()
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{
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Complex z1{0, 1};
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std::cout << std::setprecision(std::numeric_limits<typename Complex::value_type>::digits10);
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std::cout << std::scientific << std::fixed;
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std::cout << "Print a complex number : " << z1 << std::endl;
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std::cout << "Square it : " << z1*z1 << std::endl;
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std::cout << "Real part : " << z1.real() << " = " << real(z1) << std::endl;
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std::cout << "Imaginary part : " << z1.imag() << " = " << imag(z1) << std::endl;
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std::cout << "Absolute value : " << abs(z1) << std::endl;
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std::cout << "Argument : " << arg(z1) << std::endl;
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std::cout << "Norm : " << norm(z1) << std::endl;
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std::cout << "Complex conjugate : " << conj(z1) << std::endl;
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std::cout << "Proj onto Riemann sphere : " << proj(z1) << std::endl;
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typename Complex::value_type r = 1;
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typename Complex::value_type theta = 0.8;
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// We need a using declaration here, since polar is called with a scalar:
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using std::polar;
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std::cout << "Polar coord phase = 0 : " << polar(r) << std::endl;
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std::cout << "Polar coord phase != 0 : " << polar(r, theta) << std::endl;
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std::cout << "\nElementary special functions:\n";
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std::cout << "exp(z1) : " << exp(z1) << std::endl;
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std::cout << "log(z1) : " << log(z1) << std::endl;
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std::cout << "log10(z1) : " << log10(z1) << std::endl;
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std::cout << "pow(z1, z1) : " << pow(z1, z1) << std::endl;
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std::cout << "Take its square root : " << sqrt(z1) << std::endl;
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std::cout << "sin(z1) : " << sin(z1) << std::endl;
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std::cout << "cos(z1) : " << cos(z1) << std::endl;
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std::cout << "tan(z1) : " << tan(z1) << std::endl;
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std::cout << "asin(z1) : " << asin(z1) << std::endl;
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std::cout << "acos(z1) : " << acos(z1) << std::endl;
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std::cout << "atan(z1) : " << atan(z1) << std::endl;
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std::cout << "sinh(z1) : " << sinh(z1) << std::endl;
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std::cout << "cosh(z1) : " << cosh(z1) << std::endl;
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std::cout << "tanh(z1) : " << tanh(z1) << std::endl;
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std::cout << "asinh(z1) : " << asinh(z1) << std::endl;
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std::cout << "acosh(z1) : " << acosh(z1) << std::endl;
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std::cout << "atanh(z1) : " << atanh(z1) << std::endl;
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}
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int main()
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{
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std::cout << "First, some operations performed with std::complex:\n";
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complex_number_examples<std::complex<double>>();
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std::cout << "\nNow the same operations performed with quad precision complex numbers:\n";
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complex_number_examples<boost::multiprecision::cpp_complex_quad>();
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}//]
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/*
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//[cpp_complex_out
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Now the same operations performed using quad precision complex numbers:
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Print a complex number : (0.000000000000000000000000000000000,1.000000000000000000000000000000000)
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Square it : -1.000000000000000000000000000000000
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Real part : 0.000000000000000000000000000000000 = 0.000000000000000000000000000000000
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Imaginary part : 1.000000000000000000000000000000000 = 1.000000000000000000000000000000000
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Absolute value : 1.000000000000000000000000000000000
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Argument : 1.570796326794896619231321691639751
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Norm : 1.000000000000000000000000000000000
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Complex conjugate : (0.000000000000000000000000000000000,-1.000000000000000000000000000000000)
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Proj onto Riemann sphere : (0.000000000000000000000000000000000,1.000000000000000000000000000000000)
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Polar coord phase = 0 : 1.000000000000000000000000000000000
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Polar coord phase != 0 : (0.696706709347165389063740022772448,0.717356090899522792567167815703377)
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Elementary special functions:
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exp(z1) : (0.540302305868139717400936607442977,0.841470984807896506652502321630299)
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log(z1) : (0.000000000000000000000000000000000,1.570796326794896619231321691639751)
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log10(z1) : (0.000000000000000000000000000000000,0.682188176920920673742891812715678)
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pow(z1, z1) : 0.207879576350761908546955619834979
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Take its square root : (0.707106781186547524400844362104849,0.707106781186547524400844362104849)
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sin(z1) : (0.000000000000000000000000000000000,1.175201193643801456882381850595601)
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cos(z1) : 1.543080634815243778477905620757062
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tan(z1) : (0.000000000000000000000000000000000,0.761594155955764888119458282604794)
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asin(z1) : (0.000000000000000000000000000000000,0.881373587019543025232609324979792)
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acos(z1) : (1.570796326794896619231321691639751,-0.881373587019543025232609324979792)
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atan(z1) : (0.000000000000000000000000000000000,inf)
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sinh(z1) : (0.000000000000000000000000000000000,0.841470984807896506652502321630299)
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cosh(z1) : 0.540302305868139717400936607442977
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tanh(z1) : (0.000000000000000000000000000000000,1.557407724654902230506974807458360)
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asinh(z1) : (0.000000000000000000000000000000000,1.570796326794896619231321691639751)
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acosh(z1) : (0.881373587019543025232609324979792,1.570796326794896619231321691639751)
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atanh(z1) : (0.000000000000000000000000000000000,0.785398163397448309615660845819876)
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//]
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*/
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