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/* Rubin encoder/decoder header       */

/* work started at   : aug   3, 1994  */

/* last modification : aug  15, 1994  */

/* $Id: compr_rubin.h,v 1.1.1.1 2004-04-15 01:11:03 phoenix Exp $ */

#include "pushpull.h"

#define RUBIN_REG_SIZE   16

#define UPPER_BIT_RUBIN    (((long) 1)<<(RUBIN_REG_SIZE-1))

#define LOWER_BITS_RUBIN   ((((long) 1)<<(RUBIN_REG_SIZE-1))-1)

struct rubin_state {

        unsigned long p;

        unsigned long q;

        unsigned long rec_q;

        long bit_number;

        struct pushpull pp;

        int bit_divider;

        int bits[8];

};

void init_rubin (struct rubin_state *rs, int div, int *bits);

int encode (struct rubin_state *, long, long, int);

void end_rubin (struct rubin_state *);

void init_decode (struct rubin_state *, int div, int *bits);

int decode (struct rubin_state *, long, long);