code: def forrt(X, m=None):
      """
      RFFT with order like Munro (1976) FORTT routine.
      """
      if m is None:
          m = len(X)
      y = np.fft.rfft(X, m) / m
      return np.r_[y.real, y[1:-1].imag]
  
imports: import numpy
label_desc: Use image node_id 1 for calling a global function with example usage: forrt(X, m) and returns: np