boost_preprocessor/include/boost/preprocessor/max.hpp

#ifndef BOOST_PREPROCESSOR_MAX_HPP
#define BOOST_PREPROCESSOR_MAX_HPP

// Copyright (C) 2001
// Housemarque Oy
// http://www.housemarque.com
//
// Permission to copy, use, modify, sell and distribute this software is
// granted provided this copyright notice appears in all copies. This
// software is provided "as is" without express or implied warranty, and
// with no claim as to its suitability for any purpose.

// See http://www.boost.org for most recent version.

/*! \file

<a href="../../../../boost/preprocessor/max.hpp">Click here to see the header.</a>
*/

#include <boost/preprocessor/comparison/less_equal.hpp>
#include <boost/preprocessor/if.hpp>

//! Expands to the maximum of X and Y.
/*!
For example, BOOST_PP_MAX(5,7) expands to 7 (a single token).
*/
#define BOOST_PP_MAX(X,Y) BOOST_PP_MAX_D(0,X,Y)

#ifndef DOXYGEN_SHOULD_SKIP_THIS
#define BOOST_PP_MAX_D(D,X,Y) BOOST_PP_IF(BOOST_PP_LESS_EQUAL_D(D,X,Y),Y,X)
#endif

//! Obsolete. Use BOOST_PP_MAX().
#define BOOST_PREPROCESSOR_MAX(X,Y) BOOST_PP_MAX(X,Y)
#endif