code: def _atleast_float(dtype, other_dtype):
      """Return a dtype that is real or complex floating-point.
  
      For inputs that are boolean or integer dtypes, this returns the default
      float dtype; inputs that are complex get converted to the default complex
      dtype; real floating-point dtypes (`float*`) get passed through unchanged
      """
      if dtype is None:
          dtype = other_dtype
      if not (dtype.is_floating_point or dtype.is_complex):
          return _dtypes_impl.default_dtypes().float_dtype
      return dtype
  
imports: from __future__ import annotations
  import functools
  from typing import Optional
  import torch
  from .None import _dtypes_impl, _util
  from ._normalizations import ArrayLike, AxisLike, DTypeLike, KeepDims, NotImplementedType, OutArray
label_desc: Use image node_id 2 for calling a global function with example usage: _atleast_float(dtype, other_dtype) and returns: dtype, _dtypes_impl