code: def setUp(self):
      self.input_dtype = numpy.longdouble
      self.output_dtype = numpy.clongdouble
      self.np_fft_comparison = np_fft.rfft
  
      self.direction = "FFTW_FORWARD"
  
imports: from pyfftw import FFTW
  import numpy
  from timeit import Timer
  from .test_pyfftw_base import run_test_suites, miss, require, np_fft
  import unittest
  from .test_pyfftw_complex import Complex64FFTWTest
label_desc: Use image node_id 1 for calling the RealForwardLongDoubleFFTWTest obj's underlying member method code with example usage: obj.setUp() without return types