IN_CLASSE 274 include/uapi/linux/in.h #define IN_CLASSE(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000) IN_CLASSE 274 tools/include/uapi/linux/in.h #define IN_CLASSE(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000)