code: def gmres_loose(A, b, tol):
      """
      gmres with looser termination condition.
      """
      b = np.asarray(b)
      min_tol = 1000 * np.sqrt(b.size) * np.finfo(b.dtype).eps
      return gmres(A, b, tol=max(tol, min_tol), atol=0)
  
imports: from __future__ import division, print_function, absolute_import
  from .None import _arpack
  import numpy
  import warnings
  from scipy.sparse.linalg.interface import aslinearoperator, LinearOperator
  from scipy.sparse import eye, issparse, isspmatrix, isspmatrix_csr
  from scipy.linalg import eig, eigh, lu_factor, lu_solve
  from scipy.sparse.sputils import isdense
  from scipy.sparse.linalg import gmres, splu
  from scipy._lib._util import _aligned_zeros
  from scipy._lib._threadsafety import ReentrancyLock
label_desc: Use image node_id 3 for calling a global function with example usage: gmres_loose(A, b, tol) and returns: gmres