code: def wninsd(left, right, window):
      
      assert isinstance(window, stypes.SpiceCell)
      assert window.dtype == 1
      left = ctypes.c_double(left)
      right = ctypes.c_double(right)
      libspice.wninsd_c(left, right, ctypes.byref(window))
docs: Insert an interval into a double precision window.
  
      http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/wninsd_c.html
  
      :param left: Left endpoints of new interval. 
      :type left: float
      :param right: Right endpoints of new interval. 
      :type right: float
      :param window: Input window. 
      :type window: spiceypy.utils.support_types.SpiceCell