Python zeros_like_jaxval Beispiele

Beispiel #1

Datei: host_callback.py Projekt: zohbahk/jax

def _instantiate_zeros(arg, tan):
  """Turn special ad.zero tangents into arrays of 0s."""
  if type(tan) is not ad.Zero:
    return tan

  try:
    aval = arg.aval
    return ad.instantiate_zeros_aval(aval, tan)
  except (AttributeError, KeyError):
    # We get here for regular Python values
    return ad.zeros_like_jaxval(arg)

Beispiel #2

Datei: lax_control_flow.py Projekt: rsantana-isg/jax

def _convert_zeros(convert_symbolic, example, tangent):
    if tangent is ad.zero:
        if not convert_symbolic:
            return core.unit
        else:
            return ad.zeros_like_jaxval(example)
    elif type(tangent) is ad.TangentTuple:
        return core.pack(
            map(_convert_zeros, convert_symbolic, example, tangent))
    else:
        return tangent