code: def _populate_module_functions():
      def _fix(arr):
          xp, dev, arr = _from_chx(arr)
          with dev:
              ret = xp.fix(arr)
              ret = xp.asarray(ret)
          return _to_chx(ret)
  
      def _broadcast_arrays(*args):
          xps, devs, arrs = zip(*(_from_chx(arr) for arr in args))
          backend = xps[0]
          if not all([xp is backend for xp in xps]):
              raise TypeError(
                  "ChainerX function fallback using mixed NumPy/CuPy "
                  "arrays is not supported."
              )
          bcasted = backend.broadcast_arrays(*arrs)
          return [_to_chx(ret) for ret in bcasted]
  
      def _copysign(*args):
          xps, devs, arrs = zip(*(_from_chx(arr) for arr in args))
          backend = xps[0]
          if not all([xp is backend for xp in xps]):
              raise TypeError(
                  "ChainerX function fallback using mixed NumPy/CuPy "
                  "arrays is not supported."
              )
          with devs[0]:
              y = backend.copysign(*arrs)
          return _to_chx(y)
  
      chainerx.fix = _fix
      chainerx.broadcast_arrays = _broadcast_arrays
      chainerx.copysign = _copysign
  
file_path: chainer/chainerx/_fallback_workarounds.py
imports: import numpy
  import chainerx
label_desc: Use image node_id 7 for calling a global function with example usage: _populate_module_functions() and returns: _to_chx, unknown, _to_chx