code: def _merge_tolerance(tol, default):
      if tol is None:
          return default
      if not isinstance(tol, dict):
          return tol
      out = default.copy()
      for k, v in tol.items():
          out[np.dtype(k)] = v
      return out
  
imports: from functools import partial
  import operator
  from jax._src import api
  from jax._src import config
  from jax._src import dtypes
  from jax._src.tree_util import tree_map, tree_reduce
  import numpy
label_desc: Use image node_id 15 for calling a global function with example usage: _merge_tolerance(tol, default) and returns: out, default, tol