Method reducePacket

paddle/phi/kernels/cpu/cum_kernel.cc:200–204

  template <typename Packet>
  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void reducePacket(const Packet& p,
                                                          Packet* accum) const {
    LogSumExp<T> logsumexp;
    *accum = logsumexp.packetOp(*accum, p);
  }

  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE T initialize() const {
    return Eigen::NumTraits<T>::lowest();