typedef int integer, fraction, boolean, scaled;
#define true 1
#define false 0
extern boolean aritherror;

extern int makefraction (int, int);
extern int zmakefraction (int, int);
extern int takefraction (int, int);
extern int ztakefraction (int, int);
extern int makescaled (int, int);
extern int zmakescaled (int, int);
extern int takescaled (int, int);
extern int ztakescaled (int, int);
