FM / detail

/usr/include/boost/heap/detail

Name	Size	Mode	Actions
heap_comparison.hpp	7364	0644	edit dl rm
heap_node.hpp	9557	0644	edit dl rm
ilog2.hpp	1173	0644	edit dl rm
mutable_heap.hpp	15123	0644	edit dl rm
ordered_adaptor_iterator.hpp	5154	0644	edit dl rm
stable_heap.hpp	14940	0644	edit dl rm
tree_iterator.hpp	11119	0644	edit dl rm

Edit: /usr/include/boost/heap/detail/ilog2.hpp (1173B)

#ifndef BOOST_HEAP_DETAIL_ILOG2_HPP
#define BOOST_HEAP_DETAIL_ILOG2_HPP

#include <string> // std::size_t

namespace boost {
namespace heap {
namespace detail {

template <typename IntType>
struct log2
{
    IntType operator()(IntType value)
    {
        IntType l = 0;
        while( (value >> l) > 1 )
            ++l;
        return l;
    }
};

#ifdef __GNUC__
template<>
struct log2<unsigned int>
{
    unsigned int operator()(unsigned int value)
    {
        return sizeof(unsigned int)*8 - __builtin_clz(value - 1);
    }
};

template<>
struct log2<unsigned long>
{
    unsigned long operator()(unsigned long value)
    {
        return sizeof(unsigned long)*8 - __builtin_clzl(value - 1);
    }
};

#endif

} /* namespace detail */

template <typename IntType>
IntType log2(IntType value)
{
    detail::log2<IntType> fn;
    return fn(value);
}

} /* namespace heap */
} /* namespace boost */

#endif /* BOOST_HEAP_DETAIL_ILOG2_HPP */

// boost heap: integer log2 // // Copyright (C) 2010 Tim Blechmann // // 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_HEAP_DETAIL_ILOG2_HPP #define BOOST_HEAP_DETAIL_ILOG2_HPP #include // std::size_t namespace boost { namespace heap { namespace detail { template struct log2 { IntType operator()(IntType value) { IntType l = 0; while( (value >> l) > 1 ) ++l; return l; } }; #ifdef __GNUC__ template<> struct log2 { unsigned int operator()(unsigned int value) { return sizeof(unsigned int)*8 - __builtin_clz(value - 1); } }; template<> struct log2 { unsigned long operator()(unsigned long value) { return sizeof(unsigned long)*8 - __builtin_clzl(value - 1); } }; #endif } /* namespace detail */ template IntType log2(IntType value) { detail::log2 fn; return fn(value); } } /* namespace heap */ } /* namespace boost */ #endif /* BOOST_HEAP_DETAIL_ILOG2_HPP */