1  """
 2  Check for negative height on the BMP.
 3  Seperated into it's own file to support builds
 4  without longint.
 5  """
 6  
 7  
 8  def negative_height_check(height):
 9      """Check the height return modified if negative."""
10      if height > 0x7FFFFFFF:
11          return height - 4294967296
12      return height