#define MAXVALUE        0
#define NONE            MAXVALUE
#define ROOT            MAXVALUE + 1
#define MUL             MAXVALUE + 2
#define PLU             MAXVALUE + 3
#define POW             MAXVALUE + 4
#define MIN             MAXVALUE + 5
#define DIV             MAXVALUE + 6
#define OPEN            MAXVALUE + 7
#define CLOSE           MAXVALUE + 8
#define NUM             MAXVALUE + 9
#define ID              MAXVALUE + 10
#define EOS             MAXVALUE + 11
#define COS             MAXVALUE + 12
#define SIN             MAXVALUE + 13
#define TAN             MAXVALUE + 14
#define COSEC           MAXVALUE + 15
#define CSC             COSEC
#define SEC             MAXVALUE + 16
#define COT             MAXVALUE + 17
#define PI              ID
#define EXP             ID
#define LOG             MAXVALUE + 18
#define LN              MAXVALUE + 19
#define LOG10           MAXVALUE + 20

#define ABS             MAXVALUE + 21
#define MINF            MAXVALUE + 22
#define MAXF            MAXVALUE + 23
#define IRAND           MAXVALUE + 24
#define FRAND           MAXVALUE + 25
#define MOD             MAXVALUE + 26
#define FLOOR		MAXVALUE + 27
#define SIGN		MAXVALUE + 28

#define MAXSTACK        100