72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
// Copyright (c) 2001 Jeremy Siek
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// Copyright (c) 2008 Gennaro Prota
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// Sample run:
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//
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// mask = 101010101010
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// x.size() = 0
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// Enter a bitset in binary: x = 100100010
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//
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// Input number: 100100010
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// x.size() is now: 9
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// As unsigned long: 290
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// Mask (possibly resized): 010101010
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// And with mask: 000100010
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// Or with mask: 110101010
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// Shifted left by 1: 001000100
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// Shifted right by 1: 010010001
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#include "boost/dynamic_bitset.hpp"
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#include <ostream>
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#include <iostream>
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int main()
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{
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boost::dynamic_bitset<> mask(12, 2730ul);
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std::cout << "mask = " << mask << std::endl;
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boost::dynamic_bitset<> x;
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std::cout << "x.size() = " << x.size() << std::endl;
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std::cout << "Enter a bitset in binary: x = " << std::flush;
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if (std::cin >> x) {
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const std::size_t sz = x.size();
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std::cout << std::endl;
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std::cout << "Input number: " << x << std::endl;
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std::cout << "x.size() is now: " << sz << std::endl;
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bool fits_in_ulong = true;
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unsigned long ul = 0;
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try {
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ul = x.to_ulong();
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} catch(std::overflow_error &) {
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fits_in_ulong = false;
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}
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std::cout << "As unsigned long: ";
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if(fits_in_ulong) {
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std::cout << ul;
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} else {
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std::cout << "(overflow exception)";
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}
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std::cout << std::endl;
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mask.resize(sz);
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std::cout << "Mask (possibly resized): " << mask << std::endl;
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std::cout << "And with mask: " << (x & mask) << std::endl;
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std::cout << "Or with mask: " << (x | mask) << std::endl;
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std::cout << "Shifted left by 1: " << (x << 1) << std::endl;
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std::cout << "Shifted right by 1: " << (x >> 1) << std::endl;
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}
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return 0;
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}
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