x = 1
while ( 1 + x > x )
  x = x / 2
  pause ( 0.02 )
end

x = 1
while ( x + x > x )
  x = 2 * x
  pause ( 0.02 )
end

x = 1
while ( x + x > x )
  x = x / 2
  pause ( 0.02 )
end

