ceph/src/boost/libs/dynamic_bitset/example/example1.cpp

   1 // (C) Copyright Jeremy Siek 2001.
   2 // Distributed under the Boost Software License, Version 1.0. (See
   3 // accompanying file LICENSE_1_0.txt or copy at
   4 // http://www.boost.org/LICENSE_1_0.txt)
   5
   6
   7
   8 // An example of setting and reading some bits. Note that operator[]
   9 // goes from the least-significant bit at 0 to the most significant
  10 // bit at size()-1. The operator<< for dynamic_bitset prints the
  11 // bitset from most-significant to least-significant, since that is
  12 // the format most people are used to reading.
  13 //
  14 //  The output is:
  15 //
  16 //  11001
  17 //  10011
  18 // ---------------------------------------------------------------------
  19
  20 #include <iostream>
  21 #include <boost/dynamic_bitset.hpp>
  22
  23 int main()
  24 {
  25     boost::dynamic_bitset<> x(5); // all 0's by default
  26     x[0] = 1;
  27     x[1] = 1;
  28     x[4] = 1;
  29     for (boost::dynamic_bitset<>::size_type i = 0; i < x.size(); ++i)
  30         std::cout << x[i];
  31     std::cout << "\n";
  32     std::cout << x << "\n";
  33
  34     return 0;
  35 }