1 #define xCAT(A,B) A ## B 2 #define CAT(A,B) xCAT(A,B) 3 #undef PART 4 #define PART CAT(isl_,BASE) 5 #undef UNION 6 #define UNION CAT(isl_union_,BASE) 7 #define xFN(TYPE,NAME) TYPE ## _ ## NAME 8 #define FN(TYPE,NAME) xFN(TYPE,NAME) 9 #define xS(TYPE,NAME) struct TYPE ## _ ## NAME 10 #define S(TYPE,NAME) xS(TYPE,NAME) 11