3rdParty/boost/1.78.0/libs/preprocessor/doc/ref/add.html
The BOOST_PP_ADD macro expands to the sum of its arguments.
BOOST_PP_ADD (x, y)
x The first addend of the operation. Valid values range from 0 to BOOST_PP_LIMIT_MAG. y The second addend of the operation. Valid values range from 0 to BOOST_PP_LIMIT_MAG.
If the sum of x and y is greater than BOOST_PP_LIMIT_MAG , the result is saturated to BOOST_PP_LIMIT_MAG.
Previously, this macro could not be used inside BOOST_PP_WHILE. There is no longer any such restriction. It is more efficient, however, to use BOOST_PP_ADD_D in such a situation.
This macro is the most efficient when x is greater than or equal to y. However, the efficiency gain is not worth actually comparing the two arguments prior to invocation. In other words, x should be the addend that is most likely to be the largest of the two operands.
Header: <boost/preprocessor/arithmetic/add.hpp>
#include[\<boost/preprocessor/arithmetic/add.hpp\>](../headers/arithmetic/add.html)[BOOST\_PP\_ADD](add.html)(4, 3) // expands to 7
Copyright Housemarque Oy 2002 Copyright Paul Mensonides 2002
Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at www.boost.org/LICENSE_1_0.txt)