/* A library of general-purpose routines for Turbo C */


int xor_bits (int first, int second)
{
   int result;
   int mask;

   result = 0;

   for (mask = 1; mask <= (mask << 8); mask <<= 1)
      if (((first & mask) && ~(second & mask)) || (~(first & mask) && (second & mask)))
         result |= mask;
            else
               result &= ~mask;

   return result;
}