Function ComplexGrad

tensorflow/cc/gradients/math_grad.cc:599–605

REGISTER_GRADIENT_OP("Imag", ImagGrad);

Status ComplexGrad(const Scope& scope, const Operation& op,
                   const std::vector<Output>& grad_inputs,
                   std::vector<Output>* grad_outputs) {
  auto gx_1 = Real(scope, grad_inputs[0]);
  auto gx_2 = Imag(scope, grad_inputs[0]);
  return BinaryGradCommon(scope, op, grad_outputs, gx_1, gx_2);
}
REGISTER_GRADIENT_OP("Complex", ComplexGrad);

Status AngleGrad(const Scope& scope, const Operation& op,