//compares the first digits of x and y

x = 2345;
y = 789383;

if (x == 2 * (x/2))
then
  if (y == 2 * (y/2))
  then 
     print "x and y have their first bits equal to 0";
  else
     print "x has the first bit 0 and y has the first bit 1";
  endif
else
  if (y == 2 * (y/2))
  then
      print "x has the first bit 1 and y has the first bit 0";
  else
      print "x and y have their first bits equal to 1";
  endif
endif