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// Copyright 2025 Matt Borland

// Distributed under the Boost Software License, Version 1.0.

// https://www.boost.org/LICENSE_1_0.txt

#include <boost/decimal.hpp> // This includes the entire decimal library

#include <iostream>

#include <iomanip>

int main()

{

using namespace boost::decimal::literals; // The literals are in their own namespace like std::literals

// First we show the result of 0.1 + 0.2 using regular doubles

std::cout << std::fixed << std::setprecision(17)

<< "Using doubles:\n"

<< "0.1 + 0.2 = " << 0.1 + 0.2 << "\n\n";

// Construct the two decimal values

// We construct using the literals defined by the library

constexpr boost::decimal::decimal64_t a {0.1_DD};

constexpr boost::decimal::decimal64_t b {0.2_DD};

// Now we display the result of the same calculation using decimal64_t

std::cout << "Using decimal64_t:\n"

<< "0.1_DD + 0.2_DD = " << a + b << std::endl;

}