// chrono.cpp --------------------------------------------------------------//
// Copyright Beman Dawes 2008
// Copyright Vicente J. Botet Escriba 2009-2010
// Distributed under the Boost Software License, Version 1.0.
// See http://www.boost.org/LICENSE_1_0.txt
// define BOOST_CHRONO_SOURCE so that <boost/chrono/config.hpp> knows
// the library is being built (possibly exporting rather than importing code)