code: def idd_frmi(m):
      """
      Initialize data for :func:`idd_frm`.
  
      :param m:
          Length of vector to be transformed.
      :type m: int
  
      :return:
          Greatest power-of-two integer `n` satisfying `n <= m`.
      :rtype: int
      :return:
          Initialization array to be used by :func:`idd_frm`.
      :rtype: :class:`numpy.ndarray`
      """
      return _id.idd_frmi(m)
  
imports: import scipy.linalg._interpolative
  import numpy
label_desc: Use image node_id 6 for calling a global function with example usage: idd_frmi(m) and returns: _id