ceph/src/boost/libs/dynamic_bitset/test/test_lowest_bit.cpp

   1 //
   2 // Copyright (C) 2018 James E. King III
   3 //
   4 // Permission to copy, use, modify, sell and distribute this software
   5 // is granted provided this copyright notice appears in all copies.
   6 // This software is provided "as is" without express or implied
   7 // warranty, and with no claim as to its suitability for any purpose.
   8 //
   9 // Distributed under the Boost Software License, Version 1.0. (See
  10 // accompanying file LICENSE_1_0.txt or copy at
  11 // http://www.boost.org/LICENSE_1_0.txt)
  12 //
  13
  14 #include <boost/cstdint.hpp>
  15 #include <boost/dynamic_bitset/detail/lowest_bit.hpp>
  16 #include <boost/core/lightweight_test.hpp>
  17
  18 int main(int, char*[])
  19 {
  20     for (boost::int32_t i = 1; i < 32; ++i) {
  21         BOOST_TEST_EQ(i, boost::detail::lowest_bit(1u << i));
  22     }
  23
  24     BOOST_TEST_EQ(2, boost::detail::lowest_bit(123456788));
  25     BOOST_TEST_EQ(30, boost::detail::lowest_bit(static_cast<boost::int64_t>(1507208177123328)));
  26
  27     return boost::report_errors();
  28 }