[GitHub] [incubator-mxnet] larroy commented on a change in pull request #15531: [MXNET-978] Higher Order Gradient Support `arctan`, `arctanh`, `radians`.

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larroy commented on a change in pull request #15531: [MXNET-978] Higher Order Gradient Support `arctan`, `arctanh`, `radians`.
URL: https://github.com/apache/incubator-mxnet/pull/15531#discussion_r304106230
 
 

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 File path: src/operator/tensor/util/node_op_util.h
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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+/*!
+ *  Copyright (c) 2019 by Contributors
+ * \file node_op_util.h
+ * \brief abstraction for commonly nnvm::Node operations.
+ */
+#ifndef MXNET_OPERATOR_TENSOR_UTIL_NODE_OP_UTIL_H_
+#define MXNET_OPERATOR_TENSOR_UTIL_NODE_OP_UTIL_H_
+#include <mxnet/base.h>
+#include <string>
+#include <unordered_map>
+#include "../../elemwise_op_common.h"
+
+namespace mxnet {
+namespace util {
+
+class NodeOp {
 
 Review comment:
   Loos good to me, indeed reduces noise.

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