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Update to boost v1.63.0

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This commit is contained in:
Yuri Kunde Schlesner 2017-03-12 21:29:07 -07:00
parent f005c955f8
commit 25db91d480
535 changed files with 20797 additions and 37185 deletions
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22
boost/intrusive/detail/math.hpp
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@ -23,6 +23,7 @@
#include <cstddef>
#include <climits>
#include <boost/intrusive/detail/mpl.hpp>
namespace boost {
namespace intrusive {
@ -227,9 +228,28 @@ inline float fast_log2 (float val)
return val + static_cast<float>(log_2);
}
inline bool is_pow2(std::size_t x)
{ return (x & (x-1)) == 0; }
template<std::size_t N>
struct static_is_pow2
{
static const bool value = (N & (N-1)) == 0;
};
inline std::size_t ceil_log2 (std::size_t x)
{
return static_cast<std::size_t>((x & (x-1)) != 0) + floor_log2(x);
return static_cast<std::size_t>(!(is_pow2)(x)) + floor_log2(x);
}
inline std::size_t ceil_pow2 (std::size_t x)
{
return std::size_t(1u) << (ceil_log2)(x);
}
inline std::size_t previous_or_equal_pow2(std::size_t x)
{
return std::size_t(1u) << floor_log2(x);
}
template<class SizeType, std::size_t N>