docs: def check_symmetry(A):
      """Check if ``A`` is a symmetric matrix.
  
      Args:
          A (array_like): Matrix.
  
      Returns:
          bool: ``True`` if ``A`` is symmetric; ``False`` otherwise.
      """
      A = asanyarray(A)
      if A.ndim != 2:
          raise ValueError("Checks symmetry only for bi-dimensional arrays.")
  
      if A.shape[0] != A.shape[1]:
          return False
  
      return abs(A - A.T).max() < sqrt(finfo(float).eps)