code: def dtype_to_matlab_class(dtype):
      
      if dtype.str in ['<f8']:
          return 'double'
      elif dtype.str in ['<f4']:
          return 'single'
      elif dtype.str in ['<i8']:
          return 'int64'
      elif dtype.str in ['<u8']:
          return 'uint64'
      elif dtype.str in ['<i4']:
          return 'int32'
      elif dtype.str in ['<u4']:
          return 'uint32'
      elif dtype.str in ['<i2']:
          return 'int16'
      elif dtype.str in ['<u2']:
          return 'uint16'
      elif dtype.str in ['|i1']:
          return 'int8'
      elif dtype.str in ['|u1']:
          return 'uint8'
docs: convert dtype to matlab class string