#include <boost/preprocessor/arithmetic/sub.hpp>

#define BOOST_PP_SUB(X,Y)

Expands to the difference of X and Y.

For example, BOOST_PP_SUB(4,3) expands to 1 (a single token).

Uses

BOOST_PP_WHILE()

#define BOOST_PREPROCESSOR_SUB(X,Y)

Obsolete. Use BOOST_PP_SUB(X,Y).

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