#include "common.h"

const char digits[] = "!\"#$%&'()*+,-./01"
		      "23456789:;<=>?@AB"
		      "CDEFGHIJKLMNOPQRS"
		      "TUVWXYZ[\\]^_`abcd"
		      "efghijklmnopqrstu";
const char endmarker = 'x';
const char zdig = 'z';
unsigned long int Ceor = 0;
unsigned long int Csum = 0;
unsigned long int Crot = 0;

void dochecksum(int c)
{
 Ceor ^= c;
 Csum += c;
 Csum += 1;
 if (Crot & 0x80000000)
  { Crot <<= 1;
    Crot ++;
  }
 else
  { Crot <<= 1;
  }
 Crot = (Crot + c) & 0xffffffff;
}