code: def _check_symmetric(op1, op2, vec, eps):
      r2 = op1 * op2
      s = cupy.inner(op2, op2)
      t = cupy.inner(vec, r2)
      z = abs(s - t)
      epsa = (s + eps) * eps ** (1.0 / 3.0)
      if z > epsa:
          return False
      return True
  
imports: import numpy
  import cupy
  from cupy import cublas
  from cupy.cuda import device
  from cupy.cuda import runtime
  from cupy.linalg import _util
  from cupyx.scipy import sparse
  from cupyx.scipy.sparse.linalg import _interface
  from cupyx.scipy.sparse.linalg._iterative import _make_system
  import warnings
label_desc: Use image node_id 11 for calling a global function with example usage: _check_symmetric(op1, op2, vec, eps) and returns: True, False