Copyright © 2011 Helge Bahmann
Copyright © 2012 Tim Blechmann
Copyright © 2013, 2017, 2018, 2020-2022 Andrey Semashev

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)