|   | current_function.hpp | 
			The header <boost/current_function.hpp> defines a single 
			macro, BOOST_CURRENT_FUNCTION, similar to the 
			C99 predefined identifier __func__.
		
BOOST_CURRENT_FUNCTION expands to a string literal containing 
			the (fully qualified, if possible) name of the enclosing function. If there is 
			no enclosing function, the behavior is undefined.
Some compilers do not provide a way to obtain the name of the current enclosing 
			function. On such compilers, BOOST_CURRENT_FUNCTION expands to
			"(unknown)".
Copyright © 2002 by Peter Dimov. 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.