code: def _get_dgemm():
      return _get_blas_funcs(np.float64, "gemm")
  
imports: import functools
  from math import sqrt
  import numpy
  from ..time_frequency._stft import istft, stft, stft_norm1, stft_norm2
  from ..utils import _check_option, _get_blas_funcs, _validate_type, logger, sum_squared, verbose, warn
  from .mxne_debiasing import compute_bias
label_desc: Use image node_id 1 for calling a global function with example usage: _get_dgemm() and returns: _get_blas_funcs