code: def idst(x, type=2, n=None, axis=-1, norm=None, overwrite_x=False):
      """
      Return the Inverse Discrete Sine Transform of an arbitrary type sequence.
  
      Parameters
      ----------
      x : array_like
          The input array.
      type : {1, 2, 3, 4}, optional
          Type of the DST (see Notes). Default type is 2.
      n : int, optional
          Length of the transform.  If ``n < x.shape[axis]``, `x` is
          truncated. If ``n > x.shape[axis]``, `x` is zero-padded. The
          default results in ``n = x.shape[axis]``.
      axis : int, optional
          Axis along which the idst is computed; the default is over the
          last axis (i.e., ``axis=-1``).
      norm : {None, 'ortho'}, optional
          Normalization mode (see Notes). Default is None.
      overwrite_x : bool, optional
          If True, the contents of `x` can be destroyed; the default is False.
  
      Returns
      -------
      idst : ndarray of real
          The transformed input array.
  
      See Also
      --------
      dst : Forward DST
  
      Notes
      -----
      'The' IDST is the IDST of type 2, which is the same as DST of type 3.
  
      IDST of type 1 is the DST of type 1, IDST of type 2 is the DST of type
      3, and IDST of type 3 is the DST of type 2. For the definition of these
      types, see `dst`.
  
      .. versionadded:: 0.11.0
  
      """
      type = _inverse_typemap[type]
      return _pocketfft.dst(x, type, n, axis, norm, overwrite_x)
  
file_path: catboost/contrib/python/scipy/py3/scipy/fftpack/realtransforms.py
imports: from scipy.fft import _pocketfft
  from .helper import _good_shape
label_desc: Use image node_id 8 for calling a global function with example usage: idst(x, type, n, axis, norm, overwrite_x) and returns: _pocketfft