possible_sum_sign   99 test/manual/etags/y-src/cccp.c #define possible_sum_sign(a, b, sum) ((((a) ^ (b)) | ~ ((a) ^ (sum))) < 0)
possible_sum_sign  104 test/manual/etags/y-src/cccp.y #define possible_sum_sign(a, b, sum) ((((a) ^ (b)) | ~ ((a) ^ (sum))) < 0)