zhipuzi_pos_windows/include/boost/dynamic_bitset/detail/lowest_bit.hpp

// -----------------------------------------------------------
//                       lowest_bit()
//
//          Position of the lowest bit that is set.
//
//      Copyright (c) 2003-2004, 2008, 2025 Gennaro Prota
//
// Distributed under the Boost Software License, Version 1.0.
//    (See accompanying file LICENSE_1_0.txt or copy at
//          http://www.boost.org/LICENSE_1_0.txt)
//
// -----------------------------------------------------------

#ifndef BOOST_LOWEST_BIT_HPP_GP_20030301
#define BOOST_LOWEST_BIT_HPP_GP_20030301

#include "boost/assert.hpp"
#include "boost/core/bit.hpp"
#include <type_traits>

namespace boost {
namespace detail {

template< typename T >
int
lowest_bit( T x )
{
    BOOST_ASSERT( x >= 1 );

    return boost::core::countr_zero( static_cast< typename std::make_unsigned< T >::type >( x ) );
}

}
}

#endif // include guard