#else // !BOOST_MPL_CFG_ASSERT_USE_RELATION_NAMES
# if defined(BOOST_MPL_CFG_ASSERT_BROKEN_POINTER_TO_POINTER_TO_MEMBER)
# define BOOST_MPL_ASSERT_RELATION(x, rel, y) \
BOOST_MPL_AUX_ASSERT_CONSTANT( \
std::size_t \
#else // !BOOST_MPL_CFG_ASSERT_USE_RELATION_NAMES
# if defined(BOOST_MPL_CFG_ASSERT_BROKEN_POINTER_TO_POINTER_TO_MEMBER)
# define BOOST_MPL_ASSERT_RELATION(x, rel, y) \
BOOST_MPL_AUX_ASSERT_CONSTANT( \
std::size_t \