#define BASE 16
#define OKAY 0x59414b4f
  
typedef struct num_struct number;
struct  num_struct {
	int ready,                   /* Set to OKAY if number is valid */
	    size, negative, alloc;   /* Various properties    */
	unsigned char * digit;       /* here is the raw data  */
	void * memory;	             /* annoying memory management */
};
  
/******** Here are your basic number functions   **********/

number create_number( int max_size );
void   destroy_number( number n );
void   destroy_all_numbers( void );

number string_to_number( char * string );
number duplicate_number( number n );

void   print_number( number n );