code: def set_vml_accuracy_mode(mode):
      
      if use_vml:
          acc_dict = {None: 0, 'low': 1, 'high': 2, 'fast': 3}
          acc_reverse_dict = {1: 'low', 2: 'high', 3: 'fast'}
          if mode not in acc_dict.keys():
              raise ValueError(
                  "mode argument must be one of: None, 'high', 'low', 'fast'")
          retval = _set_vml_accuracy_mode(acc_dict.get(mode, 0))
          return acc_reverse_dict.get(retval)
      else:
          return None
docs: Set the accuracy mode for VML operations.
  
      The `mode` parameter can take the values:
      - 'high': high accuracy mode (HA), <1 least significant bit
      - 'low': low accuracy mode (LA), typically 1-2 least significant bits
      - 'fast': enhanced performance mode (EP)
      - None: mode settings are ignored
  
      This call is equivalent to the `vmlSetMode()` in the VML library.
      See:
  
      http://www.intel.com/software/products/mkl/docs/webhelp/vml/vml_DataTypesAccuracyModes.html
  
      for more info on the accuracy modes.
  
      Returns old accuracy settings.