整理

include/boost/align/detail/is_alignment.hpp

@@ -0,0 +1,28 @@
+/*
+Copyright 2014 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_ALIGN_DETAIL_IS_ALIGNMENT_HPP
+#define BOOST_ALIGN_DETAIL_IS_ALIGNMENT_HPP
+
+#include <boost/config.hpp>
+#include <cstddef>
+
+namespace boost {
+namespace alignment {
+namespace detail {
+
+BOOST_CONSTEXPR inline bool
+is_alignment(std::size_t value) BOOST_NOEXCEPT
+{
+    return (value > 0) && ((value & (value - 1)) == 0);
+}
+
+} /* detail */
+} /* alignment */
+} /* boost */
+
+#endif