Pi,              // pow(+Pi, 1)
	Inf(1),          // pow(+Pi, +Inf)
	NaN(),           // pow(+Pi, NaN)
	0,               // pow(+Inf, -Pi)
	1,               // pow(+Inf, -0)
	1,               // pow(+Inf, +0)
	Inf(1),          // pow(+Inf, 1)
	Inf(1),          // pow(+Inf, Pi)
	NaN(),           // pow(+Inf, NaN)
	NaN(),           // pow(NaN, -Pi)
	1,               // pow(NaN, -0)

  auto y = ConjugateHelper(scope, op.input(1));
  auto z = ConjugateHelper(scope, op.output(0));
  auto grad = grad_inputs[0];
  // grad * y * pow(x, y - 1)
  auto one = Cast(scope, Const(scope, 1.0), y.type());
  auto gx_1 =
      Mul(scope, Mul(scope, grad, y), Pow(scope, x, Sub(scope, y, one)));
  // Avoid false singularity at x = 0
  DataType x_dtype = x.type();
  auto zero = Cast(scope, Const(scope, 0.0), x_dtype);

//
// Requires constants to be exact match and only one use of all of the
// intermediate results.
//
// For GeluApproximate, replaces
//   0.5 * x * ( 1 + tanh( sqrt_2dPi  * ( x + 0.044715 * pow( x, 3 ) ) ) )
def MatchGeluApproximate : Pat<
  (TFL_MulOp
   (TFL_MulOp:$mul_out $arg0, (Arith_ConstantOp F32ElementsAttr:$Cst_1_2), TFL_AF_None),
   (TFL_AddOp:$add_out
    (TFL_TanhOp:$tanh_out

// a value of 16 limits the returned string to 65,536 characters.
// The value must be between 1 and 30.
func MaxLength(pow int) Option {
	if pow <= 0 || pow > 30 {
		panic("demangle: invalid MaxLength value")
	}
	return Option(pow << maxLengthShift)
}

// isMaxLength reports whether an Option holds a maximum length.
func isMaxLength(opt Option) bool {
	return opt&maxLengthMask != 0
}

{
  param(
    [parameter(Mandatory = $true, Position = 0)]
    [Uint32] $IPAddress
  )

  $dotted_ip = $(for ($i = 3; $i -gt -1; $i--) {
    $remainder = $IPAddress % [Math]::Pow(256, $i)
    ($IPAddress - $remainder) / [Math]::Pow(256, $i)
    $IPAddress = $remainder
  })
  return [String]::Join(".", $dotted_ip)
}

# TODO(pjh): this is copied from

            "TruncateMod", "Equal", "NotEqual", "Greater", "GreaterEqual",
            "Less", "LessEqual", "SigmoidGrad", "SoftplusGrad", "SoftsignGrad",
            "TanhGrad", "Pow", "SquaredDifference", "ApproximateEqual",
            // Others
            "AddN", "Bitcast", "Cast", "ClipByValue", "Const", "Empty",
            "Identity", "IdentityN", "Relu", "Relu6", "ReluGrad", "Relu6Grad",