typedef union #ifdef __cplusplus YYSTYPE #endif { char *str; int var; } YYSTYPE; extern YYSTYPE yylval; # define EOS 257 # define BAD 258 # define HELP 259 # define HEX 260 # define DECIMAL 261 # define QUIT 262 # define ABS 263 # define BIN 264 # define FIB 265 # define GCD 266 # define KRON 267 # define LCM 268 # define LUCNUM 269 # define NEXTPRIME 270 # define POWM 271 # define ROOT 272 # define SQRT 273 # define NUMBER 274 # define VARIABLE 275 # define LOR 276 # define LAND 277 # define EQ 278 # define NE 279 # define LE 280 # define GE 281 # define LSHIFT 282 # define RSHIFT 283 # define UMINUS 284