code: def _validate_prepare_time(self, t, pos_c):
          
          if hasattr(t, 'unit'):
              t = t.decompose(self.units).value
  
          if not isiterable(t):
              t = np.atleast_1d(t)
  
          t = np.ascontiguousarray(t.ravel())
  
          if len(t) > 1:
              if len(t) != pos_c.shape[0]:
                  raise ValueError("If passing in an array of times, it must have a shape "
                                   "compatible with the input position(s).")
  
          return t
docs: Make sure that t is a 1D array and compatible with the C position array.